National Weather Service United States Department of Commerce
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 56 1945 20 -15 1956
2 57 1979 20 -16 1999*
3 56 1979 20 -18 1981
4 57 2000 20 -25 1981
5 58 2000 19 -23 1981
6 60 2007 19 -36 1959
7 53 1995* 19 -19 1945
8 54 1979 19 -21 1973*
9 58 1978 19 -25 1968
10 48 1972 19 -18 1982
11 56 1983* 19 -19 1968
12 59 1975 19 -18 1982
13 55 1972 18 -16 1971
14 58 2005* 18 -25 1988
15 58 1995 18 -29 1957
16 59 1995 18 -24 2004
17 59 1995 18 -25 1982
18 55 2006 18 -24 1982
19 56 1996 18 -17 1997
20 56 1996* 18 -18 1946
21 54 1947 18 -17 1955
22 58 1959 18 -19 1982
23 56 1957 18 -26 1976
24 57 1999 18 -19 2011
25 54 2010 18 -26 1945
26 56 1990 18 -22 1945
27 56 1974 18 -15 2003*
28 54 1976 18 -18 1955
29 53 1950 18 -23 1962
30 54 2013 18 -29 1948
31 59 1947 18 -19 1973
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 51 1951 18 -21 1973
2 54 1951 18 -27 1961
3 53 1983* 18 -21 1955
4 51 1970 18 -15 1996
5 52 2006 18 -14 1996*
6 48 1960 18 -28 1995
7 50 1953* 18 -15 1995*
8 49 1951 18 -23 1963
9 48 1950 18 -19 1959
10 56 1990 18 -21 1979
11 58 1981 18 -25 1979
12 60 1981 18 -23 1979*
13 56 1999 18 -31 1967
14 53 2000 19 -23 1979
15 56 1939 19 -22 1979
16 52 1939 19 -20 1979
17 48 2006 19 -22 1979
18 58 2008 19 -23 1979
19 53 1981 19 -13 2006*
20 54 1991 19 -19 1966*
21 56 1953 19 -26 1950
22 56 1997 20 -15 1968
23 59 1990 20 -22 1972
24 54 1985 20 -9 1999*
25 52 1985 20 -11 1982
26 53 1957 20 -15 1982
27 56 2000* 20 -13 1980
28 54 2000* 21 -13 2014
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 48 1999* 21 -17 1980
2 61 1991 21 -15 1980
3 56 2002* 21 -19 1950
4 53 2002 21 -17 1950
5 56 1964 22 -18 1948
6 55 1959 22 -23 2007
7 54 2011 22 -20 2007
8 58 1995 22 -19 2007
9 59 1998 23 -20 2007
10 57 1998 23 -14 1953
11 53 1992 23 -17 1953
12 52 1985 23 -15 1984
13 62 1990 24 -15 1984
14 57 2006 24 -3 2014*
15 53 1945 24 -12 1993
16 52 1971 24 -4 1980
17 60 1990 25 -9 2014
18 58 1990* 25 -8 1967
19 56 1986 25 -10 1967
20 56 1986* 25 -7 1949
21 56 2012* 26 -9 1988
22 59 1948 26 -5 1988*
23 56 1968 26 -5 1940
24 55 1938 27 -6 2014
25 55 1979 27 -8 1974
26 53 1988* 27 -8 1960
27 60 1949 28 -7 2012
28 58 1950 28 -8 1974
29 58 2003* 28 -8 1974
30 59 1977 28 1 1983
31 59 1977 29 1 1983*
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 58 1998* 29 0 1946
2 56 1945 29 2 2008
3 60 1977 30 1 2008*
4 59 2000* 30 -6 1957
5 59 1974 30 -7 1995
6 58 1994 31 -5 1995
7 59 1997 31 2 2013
8 59 1954 32 5 1950
9 60 1991 32 4 1955
10 55 2002 32 -3 1950*
11 57 1945 33 0 1997
12 60 1947 33 1 1976
13 59 1945 33 -2 1976
14 59 1945 34 1 1992
15 58 2014* 34 1 1992
16 62 1994 34 3 1992
17 62 1954 35 -4 1985
18 58 1976* 35 0 1985
19 61 2002 35 11 1990
20 61 2013 36 12 1947
21 61 1992 36 4 1981
22 62 2001 37 5 1981*
23 67 1977 37 8 1989
24 65 2001 37 7 1962
25 62 2001 38 7 2004
26 58 1996* 38 14 1966
27 65 1994 38 5 1966
28 63 2011 39 6 1947
29 61 2011 39 4 2010
30 58 1958* 40 6 2012
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 1996 40 10 1978
2 64 2010 40 7 1951
3 68 2010 41 5 1946
4 64 2001 41 0 1996
5 62 2001 41 12 1969
6 65 1977* 42 11 1969
7 64 1977 42 5 1995
8 64 2000 43 5 1950
9 63 1979* 43 4 1962
10 64 2007 43 -4 1962
11 64 1965 44 7 1962
12 68 1959 44 10 2005
13 68 1959 44 11 2005
14 67 1985 45 13 2005
15 64 2004* 45 16 1994
16 65 1957 45 17 1936
17 65 1991* 46 21 1957*
18 68 1991 46 17 1939
19 65 1999* 47 19 1939
20 66 1959 47 21 2002
21 67 1996 47 22 2002*
22 68 1959 48 24 1967*
23 68 1984 48 23 1971
24 68 1988 48 10 1956
25 69 1991 49 15 1956
26 69 1991 49 23 1956
27 67 2011* 49 22 1980
28 69 1991 50 24 1980
29 68 1984* 50 28 2008*
30 68 2011* 50 23 1961
31 68 1998* 51 26 1967*
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 71 2010 51 24 1945
2 72 2000 51 19 1953
3 70 2010 52 25 1986*
4 68 2010* 52 30 1947
5 71 2010 52 26 1971
6 71 2010 53 26 1971
7 74 1984 53 27 1958
8 73 1984 53 33 1951
9 73 1984 53 30 1980
10 74 1984 54 31 1957*
11 73 2005* 54 30 2004*
12 75 2005 54 31 2004
13 75 2005 55 32 2008
14 72 2005* 55 24 1958
15 73 1983 55 29 1978
16 73 1957 55 26 1964
17 74 2000 56 29 1964
18 73 1994* 56 30 1986
19 76 1994 56 33 1946
20 73 1964 56 32 1952
21 72 2012* 57 31 1940
22 73 1997 57 34 1963*
23 72 1997* 57 33 1993*
24 73 1964* 57 33 1953
25 73 1949 57 36 1986
26 75 2000 58 33 1986
27 76 2003 58 37 2014
28 74 1984 58 35 2014
29 74 1941 58 39 2001*
30 77 1945 58 35 2010
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 73 2013* 59 34 1978
2 76 1945 59 34 1978
3 75 1983 59 35 1962
4 75 2002* 59 33 1962
5 76 1999 59 38 1971
6 75 1984 59 38 1965
7 78 1994 60 37 1965
8 73 1958 60 34 1969
9 73 1958 60 38 1969
10 76 1955 60 40 1983
11 73 2013* 60 39 1996
12 73 1988 60 36 2009*
13 74 1977 60 41 1973
14 74 2010* 60 42 2009
15 75 1990* 61 42 1946
16 77 1984 61 39 1954
17 77 1998 61 40 1957
18 76 2005 61 44 1956
19 75 2013* 61 46 1971*
20 76 2013* 61 45 1996
21 76 1994 61 42 1966*
22 77 2003 61 43 1992*
23 76 2003 61 40 1985
24 75 2003* 61 41 2005*
25 77 1986 61 43 1953
26 76 1995* 61 42 1946
27 79 1940 61 45 2010*
28 74 1994* 61 45 1962
29 75 1995 61 39 1997
30 75 1995 61 42 1997*
31 74 1988* 61 40 1964
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 76 2006* 61 38 1987
2 76 2006* 61 42 1956
3 77 1971 61 40 1956
4 76 2003 61 44 1972*
5 76 1979* 61 35 2013
6 74 2012* 61 39 2013
7 77 2001 61 40 2010*
8 76 2000 61 39 2009
9 77 2001 61 39 1999
10 79 2001 61 40 1964
11 76 1988 61 39 1968
12 76 1988 61 40 2006
13 75 1994* 61 40 2006*
14 77 1988 61 41 1964*
15 77 1988 61 37 1963
16 76 1985 60 43 1974*
17 75 1977 60 38 1941
18 77 1994 60 41 1941
19 73 1991 60 39 1962
20 74 2006 60 36 1949
21 76 1959* 60 36 1969
22 74 2009* 60 35 1982
23 75 1976 60 36 1987
24 73 1998 59 31 1987
25 75 1979 59 34 1989
26 74 1979* 59 37 1989
27 75 1979 59 37 1989
28 75 1977 59 37 1982
29 76 1977 59 30 1996
30 74 2003* 58 32 1965
31 74 2005* 58 31 1965
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 73 2014* 58 30 1970
2 74 2014* 58 31 1970
3 77 1993 58 38 1967
4 76 1993 57 35 2007
5 74 2012 57 34 1996
6 73 2008* 57 35 2013
7 75 1999 57 35 1962
8 73 1959 56 36 1990*
9 75 1987 56 34 1978
10 72 2004* 56 33 1995
11 74 2013 56 33 1995
12 74 2013 55 28 2002
13 71 1971* 55 31 1955
14 72 1979 55 32 1953
15 74 1998 55 30 1964
16 74 1991 54 32 1984*
17 74 1991 54 29 1959
18 70 1955 54 30 1956
19 72 1991 54 28 1993
20 72 1989 53 24 1993
21 73 1989 53 25 1962
22 73 1965 53 29 1962
23 72 2002* 52 27 1947
24 70 2011 52 24 1963
25 72 2001* 52 24 1950
26 71 1970 51 22 1951
27 71 19988 51 14 1957
28 72 2002 51 20 1957
29 70 2010* 51 24 1981
30 71 2010 50 17 1981
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 71 1986 50 20 1981
2 70 1959 50 24 1992
3 70 2002 49 21 1945
4 67 1995* 49 20 1945
5 70 2002 49 13 1984
6 70 1991 48 11 1984
7 70 2013 48 15 1984
8 72 2005 47 19 1954
9 69 1976 47 19 2010
10 69 1959 47 19 1993
11 66 1936 46 14 1964
12 65 1990* 46 9 1963
13 72 1983 46 18 1993*
14 70 1983 45 20 1993
15 68 1995* 45 10 1996
16 69 1954 45 12 1996
17 64 2014 44 21 1972
18 64 1980* 44 9 1939
19 67 2007 44 14 1970*
20 68 2007 43 11 1972
21 66 1993 43 8 1952
22 67 1993* 42 15 1940
23 65 1979 42 11 1969
24 66 1959 42 11 1974
25 66 2001* 41 14 1962
26 64 1975 41 7 1941
27 66 2010* 41 8 1974
28 66 2010 40 9 1974
29 66 2003 40 8 1991
30 60 1946 39 8 1991
31 64 1949 39 10 1966
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 65 1994* 39 14 1992
2 66 1971 38 2 1965
3 65 1982* 38 5 2002
4 67 1982 38 12 1989
5 68 1982 37 13 1965
6 64 1948 37 4 1987
7 62 1959* 36 3 2002
8 63 1996 36 -1 2003
9 64 1986 36 1 2003
10 66 1948 35 1 1956
11 67 1948 35 4 1956
12 61 2002 35 9 1990
13 61 1982 34 0 1986
14 61 1959* 34 -1 1986
15 65 2008 34 1 1996
16 65 2008 33 0 1996
17 63 2006 33 -1 1996
18 62 1978 32 3 1959
19 64 1957 32 2 1936
20 64 1957* 32 4 1951
21 62 1985 31 0 1987
22 60 1953 31 1 2008*
23 63 1953 31 -1 2008
24 62 2014 30 -8 2013
25 62 1953 30 -11 2013
26 61 1979 30 -1 1978*
27 62 1979 29 -5 1957
28 61 1959 29 -2 1951
29 62 1990 29 0 1989*
30 62 1963 28 -6 1958
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 2006* 28 -7 2007
2 63 2006 28 -6 2007*
3 61 2009 27 -12 1976
4 59 1978 27 -12 1976
5 59 1978 27 -8 1989
6 63 1982 27 -3 2004*
7 61 1953 26 -8 1989
8 56 1951 26 -10 2008*
9 56 1966 26 -13 2002*
10 59 1953 25 -14 1976
11 58 1969 25 -14 1960
12 55 1959* 25 -15 1988
13 57 1946 24 -18 1976
14 56 1991 24 -18 1976
15 54 1983 24 -8 1989*
16 57 1982 24 -15 1988
17 61 2000 23 -10 1988*
18 59 2000 23 -10 1953
19 56 1990 23 -16 1953
20 58 2002 23 -29 1955
21 58 1957 22 -30 1955
22 58 1998* 22 -24 1955
23 59 1990 22 -9 1955
24 59 1990 22 -14 1992*
25 58 2014 22 -27 1980
26 56 1982* 21 -25 1980
27 56 1964* 21 -20 1968
28 56 1949 21 -10 1989
29 57 1982 21 -10 1993
30 55 1990 21 -21 1962
31 55 1990 20 -23 1962
Earliest/Latest
55   
    Earliest 1st     Jan 1 1973, 1945, 1937
    Average 1st   March 8
    Latest 1st   June 3 1967
 
    Earliest Last   Oct 16 1952
    Average Last   December 1
    Latest Last   December 31 1990
 
60
    Earliest 1st   January 6 2007
    Average 1st   May 6
    Latest 1st   June 9 1967
 
    Earliest Last   September 23 1981
    Average Last   November 9
    Latest Last   December 17 2000
 
65
    Earliest 1st   April 23 1977
    Average 1st   May 29
    Latest 1st   June 26 1980
 
    Earliest Last   September 5 1966
    Average Last   October 9
    Latest Last   November 16 2008
 
70
    Earliest 1st   June 1 2010
    Average 1st   June 23
    Latest 1st   July 22 1951
 
    Earliest Last   August 3 1975
    Average Last   September 11
    Latest Last   October 14 1987
    
All Time Extremes:
HighestLowest
79 July 27 1940
August 10 2001
-36 Jan 6 1959
78 July 7 1994 -31 Feb 13 1967
77 July 22 2003
11 earlier dates
-30 Dec 21 1955
-29 Jan 15 1957
Dec 20 1955
Jan 30 1948


Period of Record:
Extremes 1936 to 2014
Averages 1939 to 1942, 1945 to 2014
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 52 2007 22 -10 1957
2 52 2007 21 -10 1968
3 53 2000 21 -10 2008
4 54 2000 21 -18 1981
5 54 2007* 21 -22 1981
6 56 2007 21 -24 1998
7 50 1995* 21 -13 2014
8 50 2007 21 -16 1968
9 55 1978 20 -25 1968
10 54 2000 20 -20 1982
11 55 1975 20 -18 1982
12 53 1975 20 -17 1982
13 52 2005 20 -15 1981
14 54 2006* 20 -25 1988
15 57 1995 20 -20 1957
16 55 1995 20 -19 1994
17 51 1995 20 -23 1982
18 54 2006* 20 -23 1982
19 54 1996 20 -15 1994
20 50 1986 19 -13 1994
21 49 1974 19 -28 1985
22 49 1959* 19 -16 1970
23 52 1992 19 -16 1976
24 54 1992 19 -14 2005*
25 52 2010 19 -13 2004
26 54 1978* 19 -11 2007
27 52 1996* 19 -17 1994*
28 50 1994 19 -14 2003
29 48 2002 19 -7 2014*
30 50 2002 19 -16 1996
31 55 2013 19 -10 1980*
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 51 1951 19 -19 1961
2 52 2008 19 -26 1961
3 52 2006 19 -16 1955
4 50 1972 19 -12 1996
5 50 2006 19 -18 1981
6 46 2008* 19 -10 2007*
7 50 1951 20 -11 1993
8 46 1965 20 -24 1963
9 46 1950 20 -11 1951
10 50 1990 20 -13 1979
11 53 1960 20 -23 1979
12 50 1999* 20 -24 1979
13 52 2008 20 -18 1967
14 52 2000 20 -23 1979
15 49 1984* 20 -18 1979
16 54 1949 20 -15 2003*
17 48 1993 20 -22 1979
18 53 1981 21 -23 1979
19 45 1981* 21 -13 2007
20 50 1991* 21 -26 1950
21 52 2002 21 -33 1950
22 52 1974 21 -12 1963
23 49 1990 21 -13 1999
24 50 1985 21 -6 2011
25 50 1965 22 -16 1982
26 52 1961 22 -17 1970
27 55 1957 22 -13 1950
28 48 2009* 22 -11 2014*
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 47 1955 22 -17 1980
2 57 1991 23 -18 1980
3 52 2002 23 -20 1980
4 54 1999 23 -10 1950
5 52 2008 23 -7 1944
6 54 2004 23 -21 2007
7 52 2011 24 -17 2007
8 57 2008 24 -12 1986
9 57 1998 24 -14 2007
10 54 2002* 24 -8 1995*
11 52 1967 25 -7 1960
12 53 1967 25 -13 1980
13 53 1977 25 -13 1980
14 53 1977 25 -7 2014
15 51 1977 26 -2 1993
16 54 1990 26 -5 1992
17 57 1973 26 -5 2014
18 54 1990 27 -8 1967
19 52 2012 27 -11 1967
20 53 2012 27 0 1949
21 56 2012 27 -8 1986
22 54 2012 28 -11 1988
23 54 2012* 28 -4 2004*
24 57 1979 28 -1 2009
25 52 1988 29 -4 1983
26 52 1949 29 -4 2014
27 61 1949 29 -5 2012
28 55 1950 30 -4 1996
29 55 2003* 30 -2 1974
30 57 2003 30 1 1950
31 56 1987 31 2 1957
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 53 2006* 31 6 1969
2 54 2008* 31 2 2008
3 55 2002 32 1 1954
4 57 1974 32 3 1954
5 55 1989* 32 -1 1995
6 55 1985 33 -2 2004
7 55 1997 33 1 2004
8 59 1954 33 5 1982*
9 59 1991 34 7 1982
10 57 2001* 34 2 1989
11 54 2011* 34 2 1989
12 57 1981 35 5 1991*
13 57 2002 35 3 1992
14 58 2004 35 4 1992
15 60 2002 36 3 1953
16 60 2002* 36 10 1981
17 61 2002 37 10 1980
18 63 2002 37 9 1990
19 63 2002 37 9 1990
20 62 2002 38 13 1989*
21 60 1987 38 10 1981
22 58 1987 38 4 1989
23 61 1954 39 13 1994
24 59 2011* 39 9 2014
25 59 1961 40 11 2003
26 63 1953 40 16 1972
27 61 1994 40 12 1966
28 62 1994* 41 16 2001
29 61 1981* 41 9 2012
30 66 1981 42 9 2012
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 62 1994 42 9 1978
2 63 2010* 42 18 2006*
3 66 2010 43 14 1986
4 59 2010* 43 11 1986
5 64 2000* 43 19 2002*
6 66 1949 44 19 1995*
7 64 1977* 44 14 1970
8 66 2000 45 6 1950
9 64 2000 45 20 1985
10 70 1965 45 16 1962
11 64 1985 46 18 1962
12 67 2004 46 13 2005
13 72 1985 46 15 2005
14 65 1991* 47 17 2001
15 65 2004 47 21 1971
16 66 2004 48 26 1984
17 67 1991 48 24 1956*
18 70 1991 48 22 2003*
19 71 1964 49 24 1944
20 69 1959 49 24 2002
21 68 1959 49 27 2002
22 68 1996 50 30 1981
23 68 1987 50 26 1971
24 68 1955 50 18 1956
25 69 1955 51 23 1956
26 70 1965 51 25 1996
27 70 1981 52 28 1980
28 72 1991 52 26 2008
29 71 2012 52 29 2008
30 69 1991* 53 25 1961
31 70 1991 53 28 2001
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 72 2013 53 23 2000
2 69 1989* 54 31 1993
3 72 2010 54 24 2011
4 71 1981 54 26 1993
5 70 1981 54 28 1964
6 70 2010* 55 21 1958
7 69 1999 55 28 1958
8 75 1986 55 29 2002
9 72 1973 56 28 1987
10 70 2008* 56 35 1988
11 70 2005* 56 32 1972*
12 73 1985 57 33 1972
13 72 1997* 57 35 2008*
14 72 1994* 57 27 1958
15 73 1994* 57 29 1978
16 72 2001* 58 33 1964*
17 73 2000* 58 34 1958
18 77 1994 58 34 1956
19 74 1957 58 38 2011*
20 72 2012* 59 39 2004
21 75 1949 59 37 1968
22 73 1997* 59 38 1963
23 72 2001* 59 32 2007
24 71 2013* 60 34 2007
25 74 1949 60 36 1986*
26 74 1952 60 33 1979
27 74 2010* 60 38 2012
28 76 2010 60 37 1995
29 75 1959 61 44 1995
30 76 1959 61 36 1988
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 2013* 61 37 1986
2 76 1983 61 34 1957
3 74 2014* 61 36 1978
4 76 1999* 62 36 1963
5 75 1999* 62 40 1979
6 76 1994* 62 42 1979
7 76 1994 62 45 2000*
8 76 1994 62 44 2000
9 77 1994* 62 41 1963
10 75 1994* 62 43 2002
11 73 2013* 63 41 2002
12 75 1994 63 37 2009
13 75 2010* 63 44 2009
14 75 2013* 63 43 2011
15 76 1995* 63 48 2009*
16 76 1982 63 44 1954
17 75 1998 63 46 1958
18 77 1982 63 50 1993*
19 78 2013 63 46 1955
20 77 1994* 63 44 1965
21 76 1972 64 44 1966
22 79 1949 64 43 1999
23 77 1978 64 44 1977
24 76 1987* 64 44 1991
25 77 1995* 64 44 1953
26 78 1995* 64 46 1977
27 78 1970* 64 44 2001*
28 78 1957 64 45 1977
29 76 1995* 64 42 1997
30 75 2004* 64 44 1997
31 76 1979 64 45 1987*
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 78 1979 64 42 1953
2 78 1979* 64 40 1959
3 78 1979 64 43 1959
4 77 2012* 64 42 1964
5 80 1979 64 43 2013
6 77 1980* 64 38 1964
7 77 1978 64 42 1994
8 77 1978 64 46 2002*
9 76 2001 64 37 1999
10 76 2001* 63 39 1964
11 77 2012* 63 41 2006
12 76 1988 63 38 2006
13 76 2005* 63 41 1957
14 76 2005* 63 41 1961
15 76 1978 63 43 1964
16 78 1978 63 45 1972
17 78 1978 63 41 1957*
18 76 1986* 63 38 1981
19 76 1965 63 39 1977
20 76 1968 62 39 1977*
21 76 2009 62 42 1982*
22 76 2003 62 39 1982
23 76 1966 62 38 1957*
24 74 1977* 62 37 2003*
25 76 1979 62 37 1989
26 78 1947 62 39 1963
27 77 1979 61 43 1954
28 79 1993 61 39 1986*
29 76 1979 61 35 1982
30 77 1979 61 37 1965
31 76 1979* 61 35 1996
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 75 1950 60 35 1991
2 76 2000* 60 38 1994
3 77 1979 60 40 1997*
4 74 2012* 60 35 1997
5 76 1979* 60 37 2000
6 77 2008 59 36 1962
7 74 2012* 59 32 1962
8 74 2012 59 28 1996
9 76 1959 59 30 1952
10 74 1959 58 32 1973
11 74 2013 58 26 1987
12 74 1961 58 30 1943
13 77 1947 58 32 1985
14 75 1979* 57 31 1953
15 76 1947 57 33 1988*
16 74 1991 57 30 1948
17 74 1991 57 26 1959
18 73 2004* 56 32 1990
19 73 2003* 56 30 1979
20 73 1989* 56 30 1993
21 73 1989* 55 25 1962
22 74 1965 55 31 1948
23 73 2002 55 24 1947
24 71 1985* 54 25 1963
25 73 1970 54 22 1998
26 71 1977* 54 26 1943
27 71 1972* 54 22 1957
28 72 2002 53 24 1957
29 71 1974* 53 28 2000*
30 72 2010 53 22 1992
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 72 2010 52 21 1998
2 70 2002* 52 22 1998
3 70 2002 52 24 1957
4 71 1995 51 24 1965*
5 70 2002* 51 21 1965
6 70 1995 50 15 1984
7 70 2013* 50 21 2001
8 72 2005 50 21 1964
9 72 2005 49 23 2010*
10 70 1959 49 18 1993*
11 67 1990* 49 18 1993*
12 68 1990 48 23 1957
13 71 1983 48 19 2006
14 70 1990* 48 23 1953
15 70 1995 47 19 1996
16 70 2014 47 19 1994
17 66 1947 46 20 1978*
18 68 1975* 46 20 1970
19 68 2007* 46 15 1959
20 69 1989 45 11 1952
21 69 1995 45 15 1952
22 70 1984 45 17 1997
23 66 1984 44 10 1969
24 65 2007* 44 13 1969
25 66 1975 43 10 1947
26 66 1975 43 18 1987*
27 66 2010 43 14 1990
28 68 1984 42 14 1985
29 68 1984 42 11 1985
30 63 1947 42 12 1991
31 64 1949 41 16 1988
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 65 1956 41 18 1965
2 65 1971 40 12 1965
3 65 1999 40 14 1965
4 67 1982 40 14 2013
5 67 1982 39 14 1951
6 64 1948 39 12 1987
7 63 1951* 38 -1 2002
8 64 1996 38 -1 2003
9 64 1996 38 2 1971
10 65 1948 37 6 1956
11 65 1977 37 8 1957
12 61 2002 37 6 2010
13 58 2012 36 4 1986
14 62 1959 36 2 1986
15 63 2008 35 6 2003
16 63 1989 35 2 1979
17 63 2006 35 7 1979
18 61 1978 34 -1 1959
19 62 1957 34 5 2014
20 63 1948 34 6 2013*
21 59 1991 33 -8 1987
22 58 1994* 33 -5 1987
23 58 1992* 33 3 1987
24 60 2014 32 -7 2013
25 58 2004 32 -2 2005
26 60 1979* 32 1 1978
27 61 2013 31 2 1978
28 60 1984 31 2 1951
29 61 2003 31 4 1989
30 61 2001 30 -1 1958
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 2006 30 -6 2007
2 59 2006 30 -5 2007
3 63 2009 29 -25 1976
4 59 1990 29 -19 1976
5 58 1973 29 -12 1980
6 59 1982 28 2 2007*
7 57 1953 28 -2 1989
8 54 1951* 28 -3 2006*
9 54 1973* 27 -28 1976
10 57 2008 27 -9 1968
11 57 1966 27 -17 1943
12 57 2008 27 -9 1988
13 53 1959 26 -11 1960
14 53 1991* 26 -11 1976
15 54 1975 26 -15 1943
16 54 1982 25 -8 1943
17 57 2000 25 -17 1942
18 53 1954 25 -7 1985
19 50 1990* 25 -8 2009
20 55 2002 24 -17 1942
21 56 1999* 24 -25 1942
22 56 1990 24 -8 1989
23 55 2013* 24 -12 1943
24 56 1990 23 -8 1943
25 56 2014 23 -27 1980
26 53 1964* 23 -21 1980
27 55 1949 23 -11 1993
28 55 1949 23 -7 1993
29 52 1983 22 -10 1943
30 52 1948 22 -18 1962
31 51 1948 22 -23 1962
Earliest/Latest
55   
    Earliest 1st     Jan 6 2007
    Average 1st   April 9
    Latest 1st   May 20 1967
 
    Earliest Last   Nov 2 1997
    Average Last   November 30
    Latest Last   December 28 1949
 
60
    Earliest 1st   Mar 27 1949
    Average 1st   May 11
    Latest 1st   June 5 1967
 
    Earliest Last   September 30 1954
    Average Last   November 4
    Latest Last   December 3 2009
 
65
    Earliest 1st   April 30 1981
    Average 1st   May 28
    Latest 1st   June 21 1977
 
    Earliest Last   September 11 1950
    Average Last   October 11
    Latest Last   November 11 1977
 
70
    Earliest 1st   May 10 1965
    Average 1st   June 16
    Latest 1st   Aug 2 1974
 
    Earliest Last   August 16 1981
    Average Last   September 22
    Latest Last   October 22 1984
    
All Time Extremes:
HighestLowest
80 Aug 5 1979 -33 Feb 21 1950
79 Aug 28 1993
July 22 1949
-28 Jan 21 1985
Dec 9 1976
78 July 19 2013
15 earlier dates
-27 Dec 25 1980
-26 Feb 2 1961
Feb 20 1950


Period of Record:
Extremes 1942 to 2014
Averages 1949 to 2014
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 48 1979 18 -17 1957
2 53 1979 18 -23 1957
3 53 1979 18 -23 1957
4 56 2000 17 -26 1981
5 56 1993 17 -21 1981
6 61 2007 17 -21 1959
7 49 1998 17 -16 1973
8 47 2008 17 -21 1968
9 55 1978 17 -32 1968
10 45 2000 17 -17 1982*
11 59 1975 16 -22 1968
12 59 1975 16 -30 1968
13 52 1972 16 -24 1981
14 57 2005 16 -31 1988
15 60 1995 16 -40 1957
16 58 1995 16 -25 2004
17 57 1995 16 -25 1982
18 57 2006 16 -29 1957
19 56 1996 16 -25 1971
20 51 1996 16 -25 1971
21 46 1954 16 -22 1971
22 56 1959 16 -30 1984
23 54 1957 16 -30 1976
24 55 1999 16 -25 1957
25 56 2010 16 -19 1961
26 55 1950 16 -14 2007
27 56 1950 16 -21 1994
28 51 1994 16 -18 1961
29 48 2002* 16 -17 1961
30 52 2013 16 -22 1993
31 57 2013 16 -23 1993
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 45 1953 16 -20 1961
2 49 1988* 16 -30 1959
3 54 2006 16 -18 1955
4 45 1984* 16 -17 1965
5 45 2006 16 -15 1996
6 46 1991 16 -20 1995
7 50 1951 16 -24 1995
8 46 1965 16 -26 1967
9 46 1950 16 -19 1959
10 51 1990 16 -22 1979
11 56 1981* 16 -28 1979
12 56 1981 16 -25 1979
13 54 1999 17 -17 1967*
14 46 1989 17 -25 1958
15 49 1984 17 -19 1987*
16 52 1954 17 -18 1979
17 47 2006 17 -23 1979
18 56 2008 17 -25 1979
19 50 1981 17 -14 2007
20 53 1981 18 -20 1950
21 55 1989* 18 -30 1950
22 54 1997* 18 -14 1963
23 56 1990 18 -20 1972
24 49 1990 18 -6 1972
25 48 1984 18 -10 1982
26 55 1957 19 -13 1970
27 55 1957 19 -21 1950
28 52 1997 19 -21 1950
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 47 1954 19 -24 1980
2 61 1991 19 -18 1980
3 55 2002* 20 -15 2003*
4 53 1999* 20 -16 1950
5 54 1964 20 -3 1957
6 54 2004* 20 -20 2007
7 51 1974 21 -16 2007
8 58 1995 21 -12 1986
9 58 1995 21 -14 2007
10 57 2002 21 -11 1960
11 54 1992 22 -16 1953
12 54 2013 22 -13 1984
13 57 1990 22 -11 1984*
14 55 1977 22 -2 1981
15 55 1990 23 -14 1993
16 60 1990 23 -5 1980
17 61 1973 23 -6 2014
18 58 1990 24 -8 1967
19 54 1983 24 -15 1967
20 54 2012 24 -4 1949
21 57 2012 25 -10 1988
22 57 2012 25 -6 2004*
23 56 1949 25 -5 1959
24 56 1988 26 -4 2014
25 56 1966 26 -7 1983
26 57 1949 26 -7 1983
27 61 1949 27 -8 2012
28 59 1949 27 -16 1982
29 61 2003 27 -7 1982
30 60 2003 28 -2 2007
31 59 1977 28 -5 1957
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 57 1998 28 2 1965
2 57 1967 29 2 2008
3 57 2009* 29 -3 2008
4 61 1974 29 -8 1954
5 58 1950 30 -5 1995
6 56 1969 30 0 2013
7 57 1997 30 1 2002
8 57 1954 31 3 1982*
9 58 2000* 31 2 1982*
10 60 1993 32 -1 1997
11 57 1954 32 -3 2005
12 57 1954 32 1 1976
13 61 2002 33 3 1992
14 59 1955 33 5 1992
15 61 2014* 33 2 1992
16 61 2002* 34 5 1992
17 62 2002 34 3 2003
18 63 2002 35 3 2003
19 65 2002 35 10 1990*
20 63 2013 35 10 1989*
21 61 1957 36 6 1981*
22 60 1992 36 3 1989
23 60 1954 37 0 1989
24 59 2001* 37 12 2014
25 59 1961 37 7 2004
26 62 1957 38 12 1989
27 68 1957 38 10 1966
28 67 1957 39 7 2012
29 62 1962 39 5 2012
30 63 1996 39 7 2012
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 62 1994 40 14 2008
2 66 2010 40 10 1974
3 68 2010 41 12 1990
4 59 2012* 41 13 1986
5 64 2000 41 16 1969
6 67 1949 42 15 1995
7 65 2000 42 9 2001
8 65 2000 43 5 1950
9 72 2000 43 11 1962
10 70 2000 43 12 1962
11 66 1957 44 18 2010
12 68 1959 44 3 2005
13 67 1959 44 3 2005
14 66 1961 45 17 2005
15 70 1957 45 19 2001
16 69 1957 46 19 1987*
17 68 1991 46 20 1955
18 67 1991 46 21 1983
19 68 1962 47 19 1981
20 68 1949 47 23 2002*
21 70 2013* 47 21 1967
22 68 1959 48 28 1967
23 68 2013* 48 24 1971
24 71 1975 49 12 1956
25 69 1975 49 13 1956
26 70 1957 49 24 1954
27 71 1991 50 25 1969
28 71 1991* 50 24 2008
29 72 2012 50 28 2008*
30 71 1987 51 22 1961
31 72 1991* 51 22 1961
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 72 1989* 51 25 2009
2 70 2013* 52 27 1953
3 72 2010 52 25 1953
4 70 1960* 52 30 2011
5 72 2002 53 29 1964
6 71 2010* 53 31 1964
7 73 2008* 53 27 1987
8 73 2008 54 30 1987
9 74 2008 54 28 1983
10 74 2008 54 32 1971
11 78 2005 54 29 1985
12 77 2005 55 32 1972
13 75 2005 55 34 1979
14 74 1994 55 31 1958
15 74 1994* 56 32 1973
16 74 1981 56 30 1964*
17 76 1952 56 32 2002
18 77 1994 56 27 1956*
19 77 1994 57 36 2004
20 75 1964 57 36 2004
21 75 1949 57 38 1968
22 74 1973 57 34 1950
23 74 1990 58 36 2007
24 73 1998* 58 32 2003
25 75 1949 58 33 1986*
26 75 1952* 58 30 1979
27 80 1952 58 42 1995*
28 76 1969 59 39 1995
29 78 1959 59 39 2007
30 77 1959 59 38 1975
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 76 1971 59 35 1957
2 75 1963 59 34 1957
3 78 2014 60 39 1962*
4 75 2002* 60 39 1962
5 77 2002 60 38 1979
6 75 1999 60 36 1965
7 75 2013* 60 40 2000
8 78 1994 60 37 1969
9 79 1994 61 40 1953
10 76 2013 61 41 1983
11 75 2013* 61 41 2002
12 75 1987 61 40 1971
13 76 1977 61 44 2009
14 74 1995* 61 45 2009
15 77 1997 61 41 1954
16 75 1997* 61 40 1954
17 75 2005 61 46 1993*
18 77 2005 61 43 1956
19 77 2005* 62 44 1997
20 76 2005 62 44 1965
21 78 1972 62 45 1966*
22 77 1994* 62 44 1970
23 76 1991* 62 43 1985*
24 76 1975* 62 45 1985
25 76 1995 62 45 1976*
26 78 1995 62 45 1976
27 81 2005 62 42 2001
28 76 1949 62 45 1971
29 76 1995 62 43 1997*
30 74 2009* 62 43 1956
31 75 1959 62 45 1964*
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 77 2006 62 41 1953
2 79 1975 62 36 1959
3 76 2003* 62 42 1959*
4 75 2006* 62 47 1976*
5 75 2012* 62 42 2013
6 76 1978 62 42 1951
7 77 1955 62 39 1957
8 76 2007 62 45 2009*
9 74 2013* 61 37 1999
10 75 2001* 61 39 1964
11 79 1975 61 39 2006
12 76 1988 61 38 2006
13 75 2003* 61 38 1957
14 77 1988 61 40 1983
15 77 1951 61 42 1979
16 77 1959 61 41 1968
17 77 1977 61 38 1957
18 82 2002 60 41 1981*
19 77 2002 60 42 1988
20 75 2004* 60 37 1995
21 75 2009 60 38 1982
22 74 2003* 60 35 1982
23 74 1976 60 36 1987
24 74 1972 60 36 1987
25 75 1972 59 37 1989
26 74 2007* 59 32 1996
27 73 1999* 59 41 1954
28 75 2004* 59 34 1957
29 75 2004* 59 31 1982
30 74 2004* 58 33 1965
31 76 2005 58 35 1965
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 75 1959 58 32 1970
2 75 1959 58 35 2007
3 79 1993 58 30 1998
4 76 1993 57 39 1997
5 74 2012* 57 34 2000
6 76 2008 57 36 2013
7 73 1999 57 33 1984
8 74 1959 56 32 1956
9 75 2004 56 32 1956
10 73 1992* 56 34 1995
11 75 2013 56 33 1985
12 72 2013* 55 34 2002*
13 72 2013 55 32 1985
14 74 2008 55 29 1986
15 73 2008* 54 32 1983*
16 75 1991 54 30 2011
17 75 1991 54 27 1959
18 71 1972 54 32 1990*
19 73 2003 53 32 2014*
20 72 1955 53 27 1979
21 74 1965 53 29 1973*
22 74 1965 52 32 1962
23 72 2002* 52 27 1979
24 71 1970 52 27 1974
25 73 1970 51 28 1950
26 74 1958 51 22 1957
27 71 1958 51 22 1984*
28 72 2002 50 23 1957
29 72 1959 50 21 1957
30 72 2010 50 19 1981
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 2010 49 19 1981
2 71 1959 49 28 1998*
3 67 2002* 49 27 1975
4 68 1954 48 21 1965
5 70 2002 48 16 1984
6 69 1959 47 13 1984
7 70 2005 47 17 1984
8 72 2005 47 20 1964
9 71 2005 46 19 2010
10 69 1990* 46 17 1993*
11 67 1949 46 17 1964
12 68 1990 45 15 1963
13 71 1990 45 19 2012*
14 69 1990 44 19 2002
15 69 2014* 44 16 1996*
16 70 1954 44 17 1994
17 61 1992* 43 18 1994
18 64 1967 43 13 1974
19 70 2007 42 12 1974
20 70 2007 42 10 1972
21 68 1995 42 13 1974*
22 63 1965 41 16 1974
23 62 2007* 41 9 1969
24 67 1959 40 8 1969
25 65 2009* 40 16 1978
26 63 2008* 40 14 2002*
27 67 2010 39 12 2002
28 67 1995 39 13 1974
29 62 1984 39 11 1991
30 61 2012 38 3 2001
31 63 2009 38 5 2001
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 66 1956 37 15 1985
2 67 1971 37 7 1965
3 65 1999* 37 11 2013*
4 66 1982 36 6 1989
5 66 1982 36 8 1965
6 61 1988* 35 7 1987
7 60 1994 35 2 2002
8 65 1996 35 5 2003*
9 65 1996 34 4 2003
10 65 1975 34 -2 1956
11 65 1975 33 3 1956
12 60 1995 33 6 2010
13 59 1992 33 0 1986
14 63 1959 32 0 1986
15 66 2008 32 0 1996
16 64 2008 31 -2 1996
17 65 2006 31 5 1967
18 60 1987 31 -1 1959
19 64 1957 30 2 2014
20 63 1957 30 6 1986
21 61 1954 30 -5 1987
22 61 1953 29 -5 1987
23 63 1999 29 1 1987
24 61 2014* 29 -4 1956
25 61 2004* 28 -1 2013*
26 61 1979 28 1 1978
27 61 1999* 27 -3 1957
28 60 1993* 27 4 1974*
29 63 2003 27 -8 1955
30 61 2011* 26 1 1958
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 63 2006 26 -7 2007
2 63 2006 26 -7 2007
3 61 2009 25 -17 1976
4 58 1950 25 -12 1976
5 58 1973 25 -8 1980
6 60 1982 25 -4 1992
7 61 1953 24 -4 1989
8 56 1951 24 -10 1964
9 53 1963 24 -10 2002
10 59 1953 23 -11 1968
11 60 1966 23 -10 1977*
12 54 2010 23 -12 1988
13 56 1959 22 -12 1976
14 55 1991 22 -18 1976
15 51 2008 22 -7 1961
16 54 1982 22 -10 1961
17 61 2000 21 -9 1979
18 54 1954 21 -11 1980
19 49 1990* 21 -7 2009
20 57 1957 21 -21 1955
21 58 1957 20 -24 1955
22 58 2013 20 -17 1955
23 58 1990 20 -12 1989
24 55 2003 20 -12 1989
25 55 1964 19 -34 1980
26 57 1964 19 -29 1980
27 57 1964* 19 -21 1968
28 56 1949 19 -12 1960
29 54 1982* 19 -8 1999*
30 52 1984 18 -24 1956
31 52 1990 18 -29 1962
Earliest/Latest
55   
    Earliest 1st     Jan 4 2000, 1950
    Average 1st   March 15
    Latest 1st   May 19 1971
 
    Earliest Last   Oct 23 1965
    Average Last   November 28
    Latest Last   December 28 1949
 
60
    Earliest 1st   January 6 2007
    Average 1st   April 29
    Latest 1st   June 6 1967
 
    Earliest Last   September 20 1963
    Average Last   November 8
    Latest Last   December 17 2000
 
65
    Earliest 1st   April 19 2002
    Average 1st   May 25
    Latest 1st   June 18 1985
 
    Earliest Last   September 13 1963
    Average Last   October 10
    Latest Last   November 17 2006
 
70
    Earliest 1st   May 9 2000
    Average 1st   June 11
    Latest 1st   July 14 1985
 
    Earliest Last   August 12 1981
    Average Last   September 15
    Latest Last   October 20 2007
    
All Time Extremes:
Highest Lowest
82 August 18 2002 -40 Jan 15 1957
81 July 27 2005 -34 Dec 25 1980
80 June 27 1952 -32 Jan 9 1968
79 July 9 1994
Sept 3 1993
Aug 11 1975
Aug 2 1975
-31 Jan 14 1988
78 June 11 2005
5 earlier dates
-30 Jan 22 1984
Jan 23 1976
Jan 12 1968
Feb 2 1959
Feb 21 1950


Period of Record:
Extremes 1949 to 2014
Averages 1949 to 2014
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 52 1945 14 -21 1964
2 53 1942 14 -29 1968
3 52 2000* 14 -25 1981
4 55 1950 14 -28 1981
5 55 1993* 14 -28 1981
6 59 2007 14 -29 1972
7 50 1946 14 -21 1994
8 46 2008 13 -28 1942
9 51 1978 13 -31 1968
10 48 1939 13 -28 1982
11 54 1983 13 -38 1976
12 54 1980 13 -30 1968
13 44 1995 13 -29 1981
14 55 2006 13 -35 1957
15 58 1995 13 -36 1957
16 58 1995 13 -32 1957
17 59 1995 13 -32 1982
18 54 2006 12 -42 1957
19 53 1996 12 -38 1976
20 53 1996 12 -33 1971
21 49 1954 12 -28 1994
22 51 1959 12 -35 1984
23 51 1957 12 -29 1976
24 50 1996* 12 -32 1961
25 52 2010 12 -29 1945
26 52 2010 12 -34 1948
27 51 1986 12 -31 1994
28 49 1996 12 -22 1971
29 38 1994* 12 -25 1962
30 45 1950 12 -32 1948
31 56 2013 12 -24 1973
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 45 1988 12 -37 1971
2 48 1981* 12 -29 1971
3 51 1983 12 -40 1971
4 46 1982 12 -36 1971
5 45 2006 13 -20 1978*
6 41 1991* 13 -39 1948
7 47 1951 13 -26 1948
8 47 1951 13 -27 1950
9 44 1965 13 -22 1948*
10 45 2001 13 -32 1975*
11 55 1981 13 -33 1948
12 56 1981 13 -28 1979
13 50 1999 13 -28 1967
14 53 1946 13 -25 1968
15 43 1984 14 -63 1943
16 44 1984 14 -50 1943
17 47 2006 14 -27 1963
18 52 2008 14 -24 1979
19 44 1961 14 -20 1979*
20 49 1981 14 -31 1966
21 55 1953 14 -32 1950
22 54 1997 15 -20 1968*
23 53 1990 15 -26 1972
24 47 1985 15 -15 1972*
25 51 1985 15 -15 1982
26 49 1957 15 -21 1950
27 50 1957 16 -19 1963
28 45 2009 16 -19 1964
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 47 1999 16 -18 1982*
2 59 1991 16 -19 1944
3 55 1991 16 -27 1950
4 51 1974 17 -32 1950
5 56 1964 17 -24 1948
6 51 1964 17 -26 1948
7 49 1979* 17 -20 2007
8 56 1995 18 -18 2007
9 56 1995* 18 -22 1943
10 56 2002 18 -20 1972
11 53 1992 19 -11 1987
12 49 1973 19 -15 1984
13 53 1990 19 -18 1948
14 60 1946 19 -13 1948
15 51 1990 20 -17 1993
16 48 1948 20 -13 1980
17 60 1990 20 -12 1967
18 59 1990 21 -17 1967
19 55 1986 21 -16 1967
20 55 1945 21 -8 1949
21 53 1995 22 -13 1988
22 54 2012* 22 -9 2004*
23 55 1949 22 -9 1959
24 55 1953 23 -3 2014*
25 52 1979* 23 -11 1974
26 53 1949 23 -10 1960
27 56 1948 24 -8 2012
28 55 2000* 24 -10 1974
29 56 2003 24 -15 1974
30 53 2003 25 -1 1983
31 59 1987 25 -5 2007
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 59 1987 25 -7 1950
2 57 1945 26 1 1995
3 58 1945 26 -5 1954
4 58 2000 26 -5 1954
5 57 1974* 27 -8 1995
6 57 1989 27 -7 1995
7 54 2010* 28 -8 1943
8 64 1991 28 2 2002
9 64 1991 28 -1 1997
10 61 1945 29 -8 1997
11 56 2011* 29 -2 1997
12 60 1947 29 -3 1976
13 63 2002 30 -6 1976
14 62 2002* 30 -2 1992
15 61 2014 31 -6 1992
16 62 1994 31 1 1992
17 62 1945 31 -5 1985
18 62 1945 32 1 1985
19 61 2013 32 3 1961
20 65 1987 33 2 1961
21 59 1957 33 0 1981
22 62 1992 33 -1 1981
23 62 1977 34 -1 1989
24 59 2005* 34 0 1962
25 58 1946 35 -4 1949
26 57 1990 35 7 1966
27 62 2011* 36 0 1966
28 65 2011 36 1 1947
29 62 1962 36 3 2012
30 61 1947 37 6 1978
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 59 1996* 37 7 1978
2 66 2010 38 8 1974
3 66 2010 38 11 2007*
4 63 1942 38 12 1980
5 64 2001* 39 11 1969*
6 66 1949 39 13 1995
7 61 1953 40 7 1995
8 63 2000 40 1 1950
9 66 2000 40 2 1962
10 64 1957 41 3 1962
11 66 2007 41 6 1962
12 68 1959 42 10 1962
13 67 1959 42 11 2005
14 65 1985 42 13 2005
15 68 2004 43 18 1994
16 66 1945 43 18 1957
17 68 1991 44 15 1961
18 68 1991 44 14 1944
19 66 1986 44 16 1944
20 65 1999* 45 18 1956
21 66 1975 45 19 1944
22 68 1941 45 24 2002*
23 68 2013 46 25 1971
24 69 1975 46 13 1956
25 68 1991 47 18 1956
26 66 2012* 47 22 1956
27 67 1991 47 18 1980*
28 72 1939 48 19 1994
29 68 1973* 48 25 2004
30 68 1959 48 20 1961
31 72 1975 49 20 1961
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 1975 49 24 2009
2 70 2006 49 22 1953
3 70 2010* 50 24 1986
4 67 1995* 50 26 1998
5 69 1966* 50 25 1971
6 70 1966 51 23 1971
7 72 2008 51 26 1998
8 72 1986 51 31 1962
9 70 2008 52 24 1980
10 72 2008* 52 24 1957
11 73 2005 52 24 2001
12 74 2005 52 30 1998
13 73 2005* 53 30 1979
14 76 1942 53 25 1958
15 76 1945 53 25 1978
16 72 1981* 54 26 1964
17 75 1952 54 28 1964
18 76 1994 54 28 1950
19 73 1994* 54 30 2003
20 73 1964 55 30 2001
21 73 2012* 55 32 1940
22 71 2012* 55 29 1940
23 73 1975 55 30 1940
24 75 1975 56 33 1953
25 76 1945 56 32 1979
26 78 1952 56 30 2002
27 79 2003 56 36 1995
28 76 1969 56 33 1980
29 79 1959* 57 33 1988
30 75 1959 57 31 1978
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 1941 57 31 1961
2 76 2002 57 31 1962
3 77 2002 57 32 1939
4 76 2002 58 35 1962
5 75 1999 58 35 1979*
6 76 1994 58 36 1965
7 74 1994* 58 35 1965
8 75 1994 58 38 1969
9 74 1993 58 39 1983
10 75 1988 58 37 1942
11 75 1944 59 37 1978*
12 77 1943 59 35 1978
13 76 1975 59 35 1939
14 75 1975 59 42 1940
15 76 1972 59 39 1988
16 77 1975 59 37 1946
17 75 1975 59 41 1954
18 76 1975 59 41 1998
19 77 2005 59 42 1939
20 74 1975 59 40 1965
21 78 1972 59 40 1974*
22 78 1972 59 38 1977
23 74 1994 59 36 1985
24 76 1961 60 39 1985
25 75 1961 60 42 1953
26 75 1995* 60 37 1977
27 74 2005 60 36 1977
28 75 2006 60 36 1977
29 75 1995 60 41 1997*
30 76 1940 60 38 1956
31 78 1940 60 34 1964
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 78 1970 60 35 1964
2 75 2006* 60 37 1959
3 75 2006* 59 37 1953
4 76 1995* 59 37 1964
5 76 1989 59 33 2013
6 75 1983 59 37 1979
7 74 2000 59 36 1950
8 77 1947 59 42 2010*
9 73 2013* 59 36 1979
10 74 1951 59 37 1964
11 77 1988 59 38 1968
12 76 1988 59 33 1950
13 74 2003 59 35 1950
14 77 1988 59 31 1961
15 75 1988* 59 39 1950
16 77 2002 58 38 1964
17 75 1995 58 36 1979*
18 74 1955 58 37 1962
19 73 1940 58 35 1968
20 72 2004* 58 36 1949
21 79 1939 58 35 1982*
22 77 1976* 58 30 2001
23 77 1976 57 36 1987
24 71 1998* 57 34 1987
25 75 1972 57 28 1940
26 76 1972 57 32 1989
27 74 1948 57 33 1954
28 73 1992* 56 35 1986*
29 73 2004* 56 31 1982
30 73 1960* 56 30 1965
31 75 2005 56 28 1965
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 1961* 56 31 1970
2 76 1956 55 32 1970
3 73 2014* 55 35 1970*
4 77 1970 55 33 2007*
5 74 1961 55 32 1963
6 74 1943 54 31 2000
7 73 1943 54 32 1984*
8 73 1959 54 28 1978
9 74 1959 54 31 1980*
10 73 1946 53 26 1978
11 75 2013 53 29 1967
12 75 2013 53 27 2002
13 70 1971* 52 26 1941
14 72 2003 52 26 1963
15 72 2005* 52 27 1983*
16 72 1991* 52 24 1964
17 73 1991 51 27 1948
18 70 1942 51 24 1939
19 71 1952 51 24 1993
20 70 2003* 50 22 1941
21 70 2014* 50 25 1962
22 72 1970* 50 27 1955
23 73 1970 49 22 1945
24 70 2011* 49 23 1974*
25 72 1945 49 25 1950
26 70 1972* 48 19 1951
27 70 2007 48 20 1980*
28 70 2010 48 19 1947
29 71 1959 47 22 1942
30 72 2010 47 19 1941
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 70 2010 46 20 1947
2 67 1954 46 24 1992
3 65 2002* 46 23 1996
4 66 1983* 45 21 1996*
5 68 2002 45 9 1984
6 65 1991 45 13 1984
7 67 2013* 44 9 1964
8 70 2005 44 14 1964
9 67 1976 43 16 2001*
10 66 1939 43 13 1993
11 65 1954* 43 13 1964
12 66 1990 42 12 1964
13 69 1983 42 15 1964
14 70 1983 42 15 1958
15 66 1995* 41 8 1996
16 68 2014* 41 13 1978
17 67 1943 40 11 1978
18 62 1990 40 8 1939
19 67 2007 40 10 1974
20 67 2007 39 10 1972
21 66 1989 39 10 1972
22 65 1995 38 8 1961
23 61 1981* 38 12 1982
24 62 1979* 38 8 1969
25 64 1951 37 10 1955
26 59 2008* 37 8 1941
27 67 2010 36 6 1974
28 65 1995 36 9 1974
29 64 2003 35 6 1991
30 64 2012 35 2 1991
31 66 1945 35 11 1988
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 64 1956 34 14 1988*
2 62 1994* 34 3 1965
3 63 1999* 33 2 2002
4 65 1982 33 8 2002*
5 67 1982 33 5 1986*
6 64 1948 32 4 1987
7 62 1948 32 1 2002
8 63 1996 31 1 2003
9 65 1943 31 1 2003
10 67 1948 31 5 2003*
11 66 1948 30 5 1999*
12 59 1995 30 4 1976
13 61 1945 29 1 1986
14 60 1959* 29 -3 1986
15 63 2008 29 -4 1942
16 63 2008* 28 1 1996*
17 63 2006 28 -2 1967
18 58 2013* 28 2 2014
19 59 1957 27 2 2014
20 62 1957 27 -1 1986
21 61 1954 26 -3 1987
22 58 1953 26 -1 1987*
23 63 1953 26 -2 1972*
24 60 2014 25 -8 1989
25 61 1953 25 -11 2013
26 60 1979 25 -2 1993*
27 62 1979 24 -9 1957
28 59 1993 24 -4 1957
29 61 2003 24 -9 1940
30 61 1963 23 -4 2012
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 2006 23 -7 2007*
2 54 1996 22 -13 1967
3 57 2009 22 -18 1976
4 56 1950 22 -20 1940
5 56 1973* 21 -13 1989
6 60 1973 21 -7 2000*
7 55 2011 21 -9 1972
8 54 1974 21 -15 1986
9 54 1974 20 -19 1976
10 55 2008* 20 -20 1949
11 60 1966 20 -17 1977*
12 49 1952 19 -21 1977
13 54 1946 19 -18 1976
14 51 1973 19 -18 1976
15 49 1983 18 -18 1980
16 54 1982 18 -18 1961*
17 56 2000 18 -27 1951
18 56 2000 18 -17 1980
19 52 1954 17 -26 1942
20 55 1957 17 -32 1942
21 57 1957 17 -28 1980
22 55 1990 17 -24 1980
23 59 1990 16 -30 1943
24 55 2004 16 -37 1943
25 53 1964 16 -31 1980
26 56 1964 16 -29 1980
27 55 1964* 16 -24 1968
28 56 1949 15 -23 1951
29 53 1984* 15 -20 1943
30 53 1984 15 -21 1962
31 51 1990* 15 -26 1963
Earliest/Latest
55   
    Earliest 1st     Jan 4 1950
    Average 1st   April 7
    Latest 1st   May 27 2008
 
    Earliest Last   Oct 7 1952
    Average Last   November 17
    Latest Last   December 28 1949
 
60
    Earliest 1st   Mar 14 1946
    Average 1st   May 9
    Latest 1st   June 12 2009
 
    Earliest Last   September 22 1978
    Average Last   October 29
    Latest Last   December 11 1966
 
65
    Earliest 1st   April 20 1987
    Average 1st   May 30
    Latest 1st   June 29 1982
 
    Earliest Last   September 3 1966
    Average Last   September 30
    Latest Last   November 11 1948
 
70
    Earliest 1st   May 28 1939
    Average 1st   June 21
    Latest 1st   July 26 2009
 
    Earliest Last   August 3 1975
    Average Last   September 8
    Latest Last   October 14 1983
    
All Time Extremes:
HighestLowest
79 June 27 2003
June 29 1959
Aug 21 1939
-63 Feb 15 1943
78 July 22 1972
July 21 1972
Aug 1 1970
June 26 1952
July 31 1940
-50 Feb 13 1943
77 July 19 2005
11 earlier dates
-42 Jan 18 1957
-40 Feb 3 1971
-39 Feb 6 1948
-38 Jan 19 1976
Jan 11 1976
-37 Feb 1 1971
Dec 24 1943


Period of Record:
Extremes 1939 to 2014
Averages 1939 to 2014
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 56 1973 20 -11 1997
2 58 1979 20 -18 1999
3 56 1979 20 -18 1981
4 58 2000 20 -25 1981
5 58 2000* 20 -24 1981
6 59 2007 19 -24 1959
7 56 1995 19 -14 1973
8 55 1979 19 -20 1968
9 56 1999 19 -27 1968
10 54 2000 19 -25 1982
11 58 2014 19 -24 1982
12 59 1975 19 -22 1981
13 56 1972 19 -16 1981
14 59 2005 18 -24 2004*
15 58 1995 18 -30 1957
16 58 1995 18 -24 2004
17 56 1995 18 -23 1982
18 54 2006 18 -24 1982
19 55 1949 18 -19 1997
20 58 1947 18 -15 1946
21 55 1979* 18 -18 1985
22 57 1959 18 -22 1984
23 55 1973 18 -30 1976
24 57 1999 18 -19 2011
25 55 2010 18 -22 1945
26 57 1990 18 -16 1945
27 58 1974 18 -15 1945
28 54 1976 18 -17 1948
29 53 1950 18 -11 1962*
30 55 2013 18 -27 1948
31 58 2013 18 -18 1948
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 54 1982* 18 -18 1961
2 57 1951 18 -24 1961
3 56 1973 18 -22 1955
4 54 1982 18 -22 1978
5 54 2006 18 -16 1996
6 48 2011* 18 -14 1995
7 52 1946 18 -14 1993
8 51 1951 18 -18 1963
9 50 1950 18 -17 1948
10 55 1990 18 -18 1979
11 54 1960 18 -27 1979
12 56 1999 18 -21 1979
13 59 1999 19 -23 1967
14 54 2000 19 -25 1979
15 60 1939 19 -17 1979
16 52 1949 19 -19 2003
17 55 1990 19 -23 1979
18 59 2008 19 -23 1979
19 50 2008 19 -12 2007
20 58 1939 19 -20 1950
21 56 1989* 20 -24 1950
22 55 1976 20 -17 1968
23 56 1974 20 -18 1999*
24 50 1990 20 -4 2011*
25 51 1965 20 -12 1982
26 53 1957 20 -16 1970
27 55 1957 21 -15 1950
28 54 2000 21 -12 2014
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 52 1939 21 -19 1980
2 60 1991 21 -18 1944
3 58 1972 21 -18 1980
4 55 2002 22 -16 1950
5 57 1964 22 -18 1948
6 55 2004* 22 -22 2007
7 51 2011* 22 -18 2007
8 59 2008 22 -14 2007
9 59 2008 23 -17 2007
10 58 2002 23 -11 1984
11 53 1992* 23 -15 1953
12 55 1973 23 -14 1984
13 56 1990 24 -11 1984
14 53 2006 24 -5 1981
15 53 1971 24 -11 1993
16 54 2002 25 -10 1980
17 59 1990 25 -9 1961
18 57 1990 25 -11 1967
19 55 1983 25 -14 1967
20 56 1945 26 -9 1949
21 58 1976 26 -11 1988
22 59 1948 26 -5 2002*
23 56 1938 27 -7 1959
24 56 1938 27 -6 2014
25 52 1953 27 -6 1985
26 53 1988* 27 -5 1985*
27 59 1949 28 -7 2014*
28 58 1950 28 -8 1982
29 60 2003* 28 -5 1974
30 58 1977* 29 -3 2007
31 56 1998* 29 0 1946
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 57 1962 29 2 1964*
2 56 1970* 30 5 2013
3 58 1977 30 -1 2008
4 60 1974 30 -5 1954*
5 60 1974 31 -7 1995
6 59 1957* 31 -1 2013
7 56 1994 31 4 1982*
8 57 1983* 32 3 1982
9 59 1991 32 4 1997
10 60 1993 33 -7 1948
11 56 1993* 33 -1 1997
12 59 1947* 33 0 1976
13 62 1945 34 2 1992*
14 59 2002 34 1 1992
15 62 2002 34 5 2005
16 62 1994 35 10 2005*
17 64 2002 35 3 1985
18 62 2002 35 6 1985
19 64 2002* 36 7 1986
20 62 1941 36 8 2007
21 63 1992 37 6 1981*
22 63 1977 37 5 1981*
23 61 1954 37 6 1989*
24 59 1987 38 13 2014*
25 58 2001* 38 7 2004
26 63 2011 38 11 1989
27 63 2011* 39 6 1966
28 64 2011 39 4 1993
29 61 2011 40 4 2009
30 63 1996 40 6 2012
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 1994 40 10 1978
2 63 2004 41 7 1974
3 67 2010 41 9 1957*
4 60 2001* 42 14 2007*
5 61 1998* 42 10 1969
6 65 1949 42 11 1969
7 64 2000 43 8 1995
8 67 2000 43 2 1950
9 66 2000 43 4 1962
10 64 1979 44 9 1947
11 65 1979 44 14 1947
12 66 1948 45 12 2005
13 65 1985 45 12 2007*
14 63 1985* 45 12 2007
15 64 2004* 46 22 1971*
16 64 2012 46 19 1959
17 70 1974 46 8 1996
18 67 1991 47 19 1944
19 67 1946 47 18 1944
20 69 1959 47 23 1956
21 67 2013* 48 25 2002*
22 70 1959 48 23 2009
23 68 1959 49 24 1971
24 70 1977 49 12 1956
25 70 1991 49 19 1956
26 70 2012 50 24 1954
27 69 2012* 50 24 1969
28 71 1939 50 27 2008
29 69 2012* 51 30 2004
30 70 2011 51 26 1961
31 70 1959 51 23 1945
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 70 2010 52 15 1945
2 69 1989* 52 30 1945
3 69 2010* 52 26 1986
4 70 1989 53 28 1996
5 70 2010 53 28 1971
6 70 2010* 53 27 1987
7 78 1984 53 27 1987
8 74 1984 54 31 1949
9 76 1984 54 30 1980
10 76 1984 54 30 1941
11 74 1984 55 29 1971
12 73 2005* 55 34 2004*
13 76 1984 55 35 1965
14 74 2005 55 28 1958
15 76 1994 56 32 1978
16 74 1956 56 31 1958
17 77 2000 56 34 1958
18 79 1994 57 29 1956
19 79 1977 57 37 1946
20 74 1964 57 32 2004*
21 73 1953 57 35 1986
22 73 1989 58 35 1963
23 74 2001 58 33 1993
24 75 1975* 58 33 1993
25 76 1949 58 36 1986
26 77 1998* 58 36 1986*
27 77 1952 59 37 2014
28 74 2010* 59 37 2014*
29 74 2010* 59 40 1970
30 77 1945 59 40 1978
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 77 1941 59 34 1982
2 75 2002 60 37 1992
3 76 2002* 60 32 1996
4 77 2002 60 39 1982
5 78 1999 60 38 1979
6 76 1994 60 38 1965
7 77 1994* 60 38 1965
8 77 1994 61 36 1969
9 77 1994 61 39 1969*
10 76 1987* 61 37 1983
11 74 1988* 61 37 1945
12 73 2013* 61 39 1971
13 76 1977 61 41 1939
14 75 2013* 61 40 1940
15 75 2013* 61 45 1946
16 81 1977 61 39 2000
17 78 1977 62 43 1946
18 75 2006* 62 45 1993*
19 76 2013* 62 46 1997
20 76 2013* 62 43 1965
21 81 1977 62 43 1974*
22 77 1972 62 45 1977*
23 77 1991 62 40 1977
24 76 1990 62 44 2002
25 77 1995 62 43 2002*
26 80 1940 62 37 1946
27 76 1995* 62 41 1983
28 76 1949* 62 42 1999
29 79 1938 62 42 1968
30 77 1988* 62 43 1997
31 75 1971 62 42 1964
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 80 1975 62 39 1987
2 77 1975 62 42 1959
3 80 1938 62 39 1940
4 79 1944 62 41 1953
5 79 1938 62 37 2013
6 79 1938 62 42 1994
7 75 2011* 62 42 2010*
8 77 2001 62 42 2009
9 75 2001 62 36 1999
10 77 2001 62 37 1964
11 78 1988 62 40 1968
12 77 1988 62 40 2006*
13 78 1947 62 36 1941
14 78 1988 61 38 1964
15 78 1985 61 39 1964
16 79 1938 61 40 1964
17 78 1938 61 41 1957
18 76 2002* 61 38 1981
19 75 1991* 61 40 1945
20 75 2004* 61 42 2008*
21 76 2009* 61 38 1982
22 80 1976 61 36 1982
23 74 2003 60 38 1957
24 72 2009* 60 35 1987
25 77 1968 60 35 1940
26 76 1948 60 39 1981
27 76 1948 60 40 1989
28 76 1973 60 37 1941
29 74 2004* 59 35 1986*
30 75 2004 59 31 1965
31 75 2005 59 31 1965
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 75 1941 59 35 1991*
2 76 1961 59 36 1991*
3 76 1993* 58 38 1967
4 76 1959 58 40 1989*
5 75 1973 58 33 1938
6 74 2014* 58 36 1984
7 74 2014 57 37 1984
8 73 2012* 57 36 1990*
9 77 1945 57 34 1980
10 76 1989 57 31 1995
11 75 2013 56 32 1995
12 74 1971 56 35 1985
13 74 1957 56 33 1985*
14 74 1944 56 32 1959
15 74 2005* 55 29 1983
16 74 1991 55 29 1984
17 75 1991 55 27 1959
18 75 1991 55 31 1959
19 73 1991 54 32 2014*
20 74 1989 54 25 1979
21 75 1989 54 28 1962
22 74 1989 53 31 1962
23 74 1989 53 23 1947
24 71 1985 53 26 1963
25 72 2001 52 25 1950
26 74 1958 52 20 1951
27 73 1958 52 13 1957
28 73 2010* 52 22 1957
29 72 2010 51 21 1951
30 71 2010* 51 19 1981
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 72 2010 51 21 1981*
2 75 1954 50 28 1997*
3 70 1969 50 21 1945*
4 68 1986* 50 21 1945
5 72 2002 49 16 1984
6 69 1991* 49 8 1984
7 70 2005 48 20 1999
8 72 2005 48 23 2001
9 70 2005* 48 22 1980
10 69 1959 47 19 1980
11 67 1990* 47 17 1964*
12 71 1990 47 14 1963
13 70 1990* 46 13 1963
14 70 1990* 46 19 1980
15 68 1995* 46 16 1996
16 68 2014* 45 19 1994
17 66 1947 45 20 1970
18 67 1975 44 15 1997
19 66 2007 44 10 1959
20 68 2007 44 10 1972
21 67 1995 43 10 1940
22 69 1979 43 10 1940
23 64 1979 43 8 1969
24 66 1990 42 10 1969
25 66 2009 42 17 1962*
26 63 2010* 41 13 1941
27 67 2010 41 12 1974
28 67 1984 41 8 1974
29 66 1984 40 7 1991
30 64 1946 40 4 2001
31 65 1949 40 6 2001
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 66 1971* 39 15 1992
2 67 1971 39 6 1965
3 65 1971* 38 11 2002*
4 67 1982 38 13 1989
5 66 1982 38 8 1965
6 68 1948 37 6 1987
7 64 1951* 37 1 2002
8 64 1938 37 0 2003
9 64 1986 36 0 2003
10 67 1948 36 -4 1956
11 66 1948 35 2 1956
12 62 2002 35 7 1999
13 63 2012 35 4 1954
14 61 1959* 34 -2 1986
15 63 2008 34 2 2003
16 63 2008* 34 -4 1996
17 63 2006 33 -5 1996
18 63 2013 33 3 1959
19 63 1957 32 3 2014
20 65 1948 32 6 2008
21 60 1988* 32 -1 1987
22 60 1994* 31 -2 1987
23 62 1992 31 2 2008
24 63 1999 31 -7 2013
25 62 1953 30 -10 2013
26 59 1979* 30 -1 1978
27 62 1986 30 -3 1949
28 61 1994* 29 1 1951
29 62 1990 29 -2 1955
30 62 2001 29 -3 1958
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 63 2006* 28 -9 2007
2 64 2006 28 -8 2003
3 64 2009 28 -20 1976
4 60 1990 27 -15 1976
5 60 1994 27 -7 1989
6 61 1982 27 -4 2000
7 61 1953 26 -6 1989
8 57 1951 26 -7 2008
9 57 1973 26 -12 2002
10 61 2012 26 -14 1968
11 59 1966 25 -23 1977
12 58 2008 25 -15 1988*
13 58 1983* 25 -19 1976
14 56 1991 24 -20 1976
15 54 1991 24 -9 1989
16 58 1971 24 -10 1961
17 59 2000 24 -17 1979
18 57 2000 23 -17 1979
19 55 1990 23 -16 1979
20 59 2002 23 -20 1955
21 57 1999* 23 -25 1955
22 60 1990 22 -16 1955
23 59 1990 22 -10 1989
24 58 1990 22 -12 1975
25 62 2014 22 -28 1980
26 55 1973* 22 -27 1980
27 57 1973 21 -18 1968
28 56 1949 21 -10 1952
29 56 1982 21 -9 1994
30 53 1990 21 -16 1962
31 55 1990 21 -20 1962
Earliest/Latest
55   
    Earliest 1st     Jan 1 1973
    Average 1st   March 9
    Latest 1st   June 5 1967
 
    Earliest Last   Oct 26 1980
    Average Last   December 5
    Latest Last   December 31 1990
 
60
    Earliest 1st   Feb 15 1939
    Average 1st   May 5
    Latest 1st   June 5 1967
 
    Earliest Last   Oct 3 1964
    Average Last   November 13
    Latest Last   December 25 2014
 
65
    Earliest 1st   May 3 2010
    Average 1st   May 28
    Latest 1st   June 14 1966
 
    Earliest Last   September 11 1996, 1950
    Average Last   October 11
    Latest Last   November 20 1948
 
70
    Earliest 1st   May 17 1974
    Average 1st   June 19
    Latest 1st   July 18 2009
 
    Earliest Last   August 10 1975
    Average Last   September 17
    Latest Last   October 14 1990,1983
    
All Time Extremes:
HighestLowest
81 July 21 1977
July 16 1977
-30 Jan 23 1976
Jan 15 1957
80 Aug 22 1976
Aug 1 1975
July 26 1940
July 29 1938
-28 Dec 25 1980
79 June 18 1994
June 16 1977
Aug 4 1944
Aug 16 1938
Aug 6 1938
Aug 5 1938
July 29 1938
-27 Dec 26 1980
Feb 11 1979
Jan 9 1968
Jan 30 1948


Period of Record:
Extremes 1938 to 1941, 1944 to 2014
Extremes 1938 to 1941, 1944 to 2014
January Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 49 1979 16 -18 1997
2 55 1979 16 -20 1957
3 53 2000* 16 -20 1981
4 57 2000 16 -26 1981
5 55 2000 16 -23 1981
6 58 2007 15 -20 1996
7 50 1998 15 -21 1988
8 51 1979 15 -19 1968
9 53 1978 15 -23 1968
10 41 2000* 15 -25 1982
11 56 2014 15 -23 1982
12 54 2014 15 -23 1982
13 49 1995 15 -20 1982*
14 57 2005* 14 -35 1988
15 58 1995 14 -31 1988
16 58 1995 14 -26 2004
17 55 1995 14 -28 1982
18 55 2006 14 -31 1982
19 55 1996 14 -23 1983
20 49 1996 14 -17 1958
21 49 1954 14 -21 1955
22 46 1957 14 -26 1982
23 50 1957* 14 -28 1982
24 52 1953 14 -20 2011*
25 54 2010 14 -19 2004*
26 55 1978 14 -16 2004
27 52 1976* 14 -19 1982
28 49 1996* 14 -16 2003
29 49 1994 14 -17 1977
30 54 2013 14 -17 1977*
31 57 2013 14 -14 1999
February Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 47 1988 14 -20 1961
2 52 1981* 14 -23 1961
3 52 2006 14 -22 1955
4 50 1982 14 -25 1978
5 46 2006 14 -25 1978
6 42 2008* 14 -15 1993
7 49 1951 14 -17 1993
8 48 1951 14 -16 1963
9 45 1950 14 -12 1985*
10 49 1990 14 -22 1979
11 59 1981 14 -29 1979
12 58 1981 15 -27 1979
13 54 1999 15 -20 1967
14 44 1951 15 -26 1979
15 48 1984* 15 -25 1979
16 49 1954* 15 -24 2003
17 46 2006 15 -26 1979
18 54 2008 15 -26 1979
19 53 1981 15 -32 1979
20 53 1981 16 -14 1950
21 54 1953 16 -21 1950
22 53 1976 16 -17 1999
23 52 1990 16 -18 1999
24 48 1985 16 -14 1972
25 47 1985 16 -14 1982
26 51 1957 17 -15 2003*
27 54 1997 17 -14 1950
28 52 1997 17 -16 2014
March Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 47 1999 17 -19 1980
2 59 1991 17 -15 1980
3 55 1991 18 -31 1950
4 52 2002* 18 -18 1950
5 55 1964 18 -6 2002
6 52 2004 18 -23 2007
7 52 2011 19 -20 2007
8 56 1995 19 -21 1949
9 56 1998 19 -18 2007
10 55 2002* 19 -17 1984
11 52 1992 19 -16 1960
12 50 2013 20 -20 1984
13 53 1990* 20 -13 1984
14 54 2006* 20 -6 2014
15 53 2007 21 -14 1993
16 56 1990 21 -9 1980
17 58 1990 21 -8 2014
18 57 1990 21 -14 1961
19 54 1986 22 -12 1967
20 53 1986 22 -8 1949
21 56 2012 22 -14 1961
22 55 2012 23 -8 2004
23 54 1949 23 -3 2009
24 54 1953 23 -6 2014
25 53 1953 24 -11 1960
26 53 1949 24 -13 1960
27 62 1949 24 -12 2012
28 62 1989 25 -11 1982
29 57 2003 25 -7 1982
30 56 1977 25 0 1983
31 56 1977 26 -5 2007
April Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 57 1998 26 -8 1957
2 54 2008 26 -2 2008
3 54 2002* 27 -3 1954
4 62 1974 27 -5 1954
5 58 1981* 27 -9 1973
6 55 1981 28 -9 1973
7 56 1997 28 -9 1973
8 57 2000 28 -1 1982
9 58 2000 29 1 1997*
10 55 2002* 29 -7 1997
11 56 2011 29 -2 1997
12 56 2011 30 -5 1976
13 57 2002 30 -6 1976
14 57 2004* 31 1 1973
15 58 2014* 31 1 1973
16 59 2002* 31 -5 2005
17 59 1998* 32 -3 2003
18 61 1981 32 -2 2008
19 61 2013* 33 4 2005
20 61 2013 33 4 2007
21 59 1987 33 1 1975
22 61 1987 34 3 1989
23 62 1977 34 3 1989
24 60 1987 34 8 1989
25 55 1961 35 3 2004
26 62 2011 35 9 1989
27 63 2011 36 3 1973
28 64 2011 36 9 2001
29 61 1981 36 3 2012
30 61 1996 37 5 1978
May Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 68 2011 37 7 2006
2 63 2004 38 12 1997
3 65 2010 38 7 2007
4 61 1998 38 12 2007*
5 65 1949 39 12 2007
6 66 1950 39 9 2003
7 68 2000 40 6 2001
8 65 2000 40 2 1950
9 65 2000 40 10 1962
10 62 2007* 41 9 2010
11 63 1996 41 13 1962
12 63 2001 41 8 2005
13 65 1985 42 10 2007
14 65 1985 42 9 1975
15 64 2004 43 19 1977
16 64 2004 43 20 1987*
17 64 1976 43 16 1983
18 69 2003 44 15 1983
19 66 1949 44 22 1983
20 65 1996* 44 20 2002*
21 67 1996 45 20 1956
22 67 2013 45 23 1958
23 67 2013 46 22 1971
24 65 2011* 46 8 1956
25 66 1955 46 16 1956
26 67 2012 47 24 2009*
27 67 1991* 47 22 1954
28 69 1987 47 25 2008*
29 73 1987 48 26 2004*
30 71 1987 48 21 1961
31 71 1987 48 24 1961
June Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 74 2002 49 21 2009
2 69 1980 49 27 1953
3 68 1995* 49 20 1953
4 70 1951 50 30 1964
5 68 2002 50 26 1971
6 70 2010 50 23 1958
7 74 1999 51 26 1958
8 72 2008* 51 26 1983
9 72 1984 51 25 1983
10 75 2003 51 28 1983*
11 72 2005* 52 27 1956
12 73 2005 52 28 1953
13 71 2005 52 32 1980
14 72 2005* 53 23 1958
15 73 2001 53 30 1978*
16 75 1981 53 23 1964
17 77 1952 53 31 1964*
18 75 1994 54 23 1956
19 73 1995 54 34 1956
20 72 1995* 54 31 2014
21 76 1949 54 36 1984*
22 73 1949 55 33 1986
23 72 1988 55 32 1993*
24 73 1950 55 33 1993
25 79 1949 55 33 2002
26 77 1952 56 31 1965
27 75 1952 56 39 1981
28 72 2005 56 37 1981
29 73 1999 56 36 1996
30 71 1999 56 34 1978
July Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 73 2013 57 34 1978
2 76 2002 57 31 1992*
3 74 2002* 57 35 1962
4 74 1983* 57 36 1962
5 75 1999 57 36 1982
6 73 1999 57 40 1979*
7 75 2013 58 32 1965
8 73 1994* 58 36 1969
9 76 1994 58 39 1969
10 74 2013* 58 39 1983
11 74 1988* 58 40 2002
12 75 1987* 58 40 1978
13 73 1987* 58 37 1980
14 79 1973 59 43 2009
15 74 2014* 59 43 1966
16 77 1980 59 38 1966
17 74 1988* 59 42 1954
18 77 1982 59 41 1958
19 80 1982 59 43 1965*
20 76 2013 59 39 1965
21 76 2011* 59 38 1999
22 75 2011 59 40 1992*
23 74 1978 59 36 1977
24 75 2010 59 38 1985
25 75 2010* 59 41 1957
26 75 1995* 59 42 1977*
27 74 2005* 59 38 1965
28 74 1995 59 40 1977
29 79 1973 59 39 1997
30 73 1988* 59 39 1968
31 73 1988* 59 36 1964
August Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 76 2006* 59 36 1953
2 76 1975 59 36 1956
3 76 1975 59 37 1956*
4 74 1988* 59 41 1964
5 78 1980 59 36 2013*
6 76 1980 59 37 1964
7 74 2011 59 37 1964
8 74 2011* 59 38 1957
9 76 1980 59 34 1964
10 75 2001* 59 33 1964
11 75 1988 59 37 1968
12 76 1988 59 38 2006
13 76 1988 59 38 2006*
14 79 1988 59 40 1957
15 77 1988 58 39 1968
16 72 2010* 58 42 1968
17 75 1987 58 37 1957
18 75 1987 58 36 1968
19 71 1956* 58 35 1995
20 72 2004* 58 38 1981
21 73 2009* 58 38 1982
22 74 1976 58 34 1982
23 75 1976 57 35 1957
24 72 1998 57 34 1987*
25 74 1979 57 32 1989*
26 72 2007* 57 35 1981
27 73 1980* 57 31 1996
28 74 1973 57 32 1996*
29 73 2004* 56 31 1982*
30 73 1979 56 30 1965
31 73 2005* 56 30 1965
September Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 75 1950 56 30 1970
2 75 1973 56 34 1991*
3 74 1993 55 27 2000
4 74 1961 55 37 1997*
5 72 2012* 55 31 2000
6 74 1983 55 29 1995
7 71 2003* 54 33 1962
8 72 2012 54 32 1990
9 72 2004* 54 30 1978
10 70 2004* 54 32 1953
11 74 2013 53 31 1995
12 72 2013* 53 33 2002*
13 70 2013* 53 29 1991
14 72 1979 53 30 1953
15 72 2005* 52 28 1964
16 70 2002* 52 28 1964
17 70 2004* 52 26 1960
18 69 1994* 51 27 1990
19 72 1952 51 25 1993
20 70 2003* 51 24 1979
21 71 1978* 51 25 1962
22 72 1965 50 24 1962
23 70 2011* 50 25 1955
24 69 2011 50 25 1963
25 70 2001 49 25 1980
26 69 1958 49 20 1957
27 68 1998 49 12 1957
28 71 2002 48 18 1957
29 69 1974 48 21 2000
30 70 2010 48 16 1981
October Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 70 2010 47 20 1981
2 68 2002 47 24 1992*
3 68 2002 47 22 1975
4 67 1954 46 23 1987*
5 67 2002 46 6 1984
6 65 1983* 45 8 1984
7 67 2013* 45 11 1984
8 70 2005 45 15 1964
9 70 2005 44 18 1978
10 65 1949 44 14 1993
11 67 1949 44 13 1964*
12 65 1990 43 14 1963
13 71 1983 43 15 1963
14 70 1983 43 17 2002*
15 67 1995 42 8 1996
16 67 2014* 42 15 1994
17 59 2014* 41 16 1978
18 63 1980 41 14 1978
19 67 2007 41 15 1976
20 67 2007 40 12 2008*
21 65 1995 40 12 1972
22 65 1995* 39 13 1957
23 62 1979 39 9 1969
24 63 2009* 39 3 1975
25 63 2009* 38 9 1978
26 62 1975 38 19 1979
27 66 2010 38 11 1990*
28 66 2010 37 13 1990
29 63 2003* 37 10 1991
30 59 2012* 36 -2 2001
31 61 1949 36 -4 1975
November Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 64 1956 36 9 1975
2 63 1999 35 9 2008*
3 63 1999* 35 8 2002
4 66 1982 34 2 1973
5 66 1982 34 7 1989
6 60 1988 34 0 1987
7 61 1951 33 -1 2002
8 63 1996 33 -3 2003
9 63 1996 32 -2 2003
10 61 1975 32 -2 1956
11 63 2002 32 1 1974*
12 59 1995 31 1 2010
13 59 2012 31 0 1986
14 59 1951 31 -2 1986
15 62 2008 30 -1 1996
16 62 2008 30 1 1996*
17 63 2006 29 -10 1996
18 59 1987* 29 0 1996
19 63 1957 29 0 1973
20 61 1957* 28 3 2013*
21 59 1954 28 -8 1987
22 59 1953 28 -8 1987
23 61 1953 27 0 1987
24 61 1999 27 -7 2013
25 60 1953 27 -9 2013
26 61 1979 26 -8 1978
27 62 1979 26 -10 1957
28 58 1993* 26 -4 1957
29 61 2003 25 -3 1989*
30 61 2011 25 -14 1958
December Dew Points
Years marked with a * are the latest of multiple occurrences
Day Highest Value Year Average Lowest Value Year
1 61 2006 25 -11 2007
2 61 2006 24 -8 2003
3 59 2009 24 -20 1976
4 56 1982* 24 -15 1976
5 57 1950 23 -5 1989*
6 60 1982 23 -2 2000*
7 60 1953 23 -5 1989
8 56 1951 22 -9 2008*
9 52 1966 22 -11 2002*
10 58 1953 22 -10 1982
11 54 1966 21 -19 1977
12 51 1949 21 -21 1977
13 56 1949 21 -17 1976
14 49 1991 21 -23 1976
15 51 1983 20 -9 1989
16 54 1982 20 -8 1961
17 52 1996 20 -13 1958
18 53 1954 19 -11 2009
19 51 1954 19 -13 2009
20 55 2002 19 -25 1955
21 55 1957 19 -26 1955
22 59 2013 18 -18 1955
23 58 1990 18 -14 1989
24 55 2004 18 -17 1975
25 58 2014 18 -30 1980
26 54 1982 18 -28 1980
27 56 1949 17 -14 1989
28 56 1949 17 -15 1960
29 55 1984* 17 -12 1960
30 53 1984 17 -23 1987
31 49 1990 17 -15 1987*
Earliest/Latest
55   
    Earliest 1st     Jan 29 1979
    Average 1st   April 2
    Latest 1st   June 6 1967
 
    Earliest Last   Oct 4 2000
    Average Last   November 22
    Latest Last   December 29 1984,1982
 
60
    Earliest 1st   Mar 27 1949
    Average 1st   May 15
    Latest 1st   June 10 1967
 
    Earliest Last   September 5 1966
    Average Last   October 24
    Latest Last   December 7 1953
 
65
    Earliest 1st   May 1 2011
    Average 1st   June 3
    Latest 1st   Jul 10 1965
 
    Earliest Last   Aug 19 1966
    Average Last   September 26
    Latest Last   Nov 5 1982
 
70
    Earliest 1st   May 29 2012, 1987
    Average 1st   June 29
    Latest 1st   Sep 20 1965
 
    Earliest Last   July 18 1968
    Average Last   September 3
    Latest Last   October 14 1983
    
All Time Extremes:
HighestLowest
80 July 19 1982 -35 Jan 14 1988
79 Aug 14 1988
July 29 1973
July 14 1973
June 25 1949
-32 Feb 19 1970
78 Aug 5 1980 -31 Jan 15 1988
Jan 18 1982
Mar 4 1950
-30 Dec 25 1980


Period of Record:
Extremes 1949 to 2014
Averages 1949 to 1958, 1960 to 2014