A strong atmospheric river moving into northern California later today will bring a threat for moderate to heavy rainfall and flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. through Wednesday. Gusty winds and isolated showers are expected today in the Northeast U.S. behind a cold front. Wind Advisories have been issued. Read More >
Click on a month below to display the normals, means, and extreme events for temperature and precipitation:
| JANUARY | FEBRUARY | MARCH |
| APRIL | MAY | JUNE |
| JULY | AUGUST | SEPTEMBER |
| OCTOBER | NOVEMBER | DECEMBER |
THIS DATA BELOW CONTAINS ERRORS AND IS NOT BEING MAINTAINED ANYMORE.
Visit this page to see how to get the correct info straight from the NWS database (ThreadEx).
DAILY NORMALS AND RECORDS FOR THE MONTH OF JANUARY FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 43 27 0.09 0.1 68 /2005 23 /2018 -6 /1968 56 /2022 1.73 2003 6.9 1971
02 43 26 0.09 0.2 67 /2000 24 /1968 -7 /1968 44 /1966 1.40 1979 3.0 2014+
03 43 26 0.10 0.1 69 /2023 23 /1979 1 /2018 55 /2000 1.37 1999 3.9 2022
04 43 26 0.09 0.1 74 /1997 20 /1981 5 /1979 53 /2023 0.89 1992 1.8 1980
05 43 26 0.10 0.2 69 /1997 19 /2018 5 /1970 57 /2007 1.11 1993 6.4 1980
06 43 26 0.09 0.1 71 /2007 19 /2018 4 /1999+ 56 /2007 0.97 2024 4.2 2015
07 43 26 0.09 0.2 71 /2008 18 /2014 -1 /2018 61 /1998 1.56 1996 19.8 1996
08 43 26 0.09 0.1 70 /2008 12 /1970 -4 /1970 62*/1998 1.07 1978 4.7 1990
09 42 26 0.09 0.2 64 /2008 8 /1970 -8 /1970 43 /2006 1.76 2024 3.5 1997
10 42 25 0.10 0.2 59 /2016 13 /1982 0 /1982 42 /1972 1.00 2016 6.2 1965
11 42 25 0.10 0.2 71 /1975 19 /1962 -5 /1988 48 /2020 0.90 1991 2.2 1991
12 42 25 0.09 0.3 70 /2018+ 20 /1984 -4 /1977 58 /2018 0.91 2018 6.1 1996
13 42 25 0.10 0.2 69 /2005 23 /1977+ -3 /1981+ 49 /2007 1.03 1964 7.7 2019
14 42 25 0.10 0.2 72 /1995 22 /1988+ 5 /1970 54 /2007 1.79 2005 0.3 1978
15 42 25 0.09 0.3 68 /2007 15 /1994 -7 /1964 60 /1995 1.56 1995 1.4 1968
16 42 25 0.10 0.2 65 /1974 14 /1972 -4 /1964 41 /1995 1.10 2022 2.3 2022+
17 42 25 0.10 0.3 70 /1990 8 /1982 -7 /1982 40 /2017+ 1.14 1994 4.2 1985
18 42 25 0.09 0.2 70 /1990 19 /1997+ -1 /1994 47 /1990+ 1.18 1980 4.2 1984
19 42 25 0.09 0.3 65 /1972 6*/1994 -6 /1994 44 /1986 1.36 1987 4.3 1978
20 42 25 0.10 0.2 63 /2006 15 /1994 -7 /1985 40 /1995 1.01 1979 4.6 2000
21 42 25 0.10 0.3 63 /2018 15 /1984 -16 /1984 46 /2017 0.94 1974 8.5 2014
22 42 25 0.09 0.2 68 /1986 15 /2014 -18*/1984 48 /2018 1.18 1987 11.1 1987
23 43 25 0.10 0.3 72 /1967 20 /2003 -4 /1978+ 45 /1999 1.88 2016 22.1*2016
24 43 25 0.10 0.3 73 /1967 21 /2014 -2 /1987 45 /1990 1.33 2019 2.5 1977
25 43 25 0.10 0.2 73 /1967 18 /1987 -5 /1987 49 /1990 1.57 1978 10.3 2000
26 43 25 0.09 0.3 79*/2024 21 /1966 3 /1987 56 /2024 1.31 2011 7.3 2011
27 43 25 0.09 0.3 71 /1974 22 /2003 -9 /1987 41 /2024 0.95 1976 2.0 2009
28 43 25 0.10 0.2 68 /2002 18 /2014 -17 /1987 45 /2018 1.64 1998 6.7 1994
29 43 25 0.09 0.3 75 /1975 10 /1966 -1 /1987+ 43 /2002+ 0.95 1990 7.2 1966
30 43 25 0.10 0.3 72 /2013 12 /1966 2 /1965 56 /2013 2.00*2013 6.3 2000
31 43 25 0.09 0.3 66 /2012 22 /2019 -7 /1965 47 /2002 0.68 1985 4.7 1985
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 6.61" 1979
DRIEST....0.40" 1981
SNOWIEST..30.9" 1996
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 42.6 MIN 25.2 AVG 33.9 PCP 2.94" SNW 6.9"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF FEBRUARY FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 43 25 0.09 0.3 75 /2002 21 /1971 2 /1965 52 /1988 1.44 2008 2.5 2021
02 44 25 0.10 0.3 68 /1990 25 /1971 5 /2004 44 /1990 1.23 1973 4.7 1996
03 44 25 0.09 0.3 67 /2020 19 /1996 1 /1965 42 /2006+ 1.33 2014 3.5 1996
04 44 25 0.10 0.3 70 /1991 14 /1996 4 /1996+ 53 /2020 2.17 1998 6.2 1995
05 44 25 0.09 0.3 73 /1991 20 /2007+-10 /1996 38 /1986 1.47 2010 14.9 2010
06 44 25 0.10 0.3 71 /2008 23 /1995+ -9 /1996 51 /2008+ 1.98 2010 17.5 2010
07 44 25 0.09 0.3 72 /2017 22 /1967 -1 /1995 50 /2017 1.53 1965 10.5 1967
08 45 26 0.09 0.2 71 /2017 25 /1985 -6 /1967 52 /2017 0.84 1997 6.8 1997
09 45 26 0.09 0.3 71 /2023 24 /1979 -5 /1967 41 /2024 1.07 1970 2.2 2010
10 45 26 0.09 0.2 65 /2024+ 22 /1994 -10 /1979 48 /2024 0.65 1970 7.1 2010
11 45 26 0.08 0.3 71 /2009 18 /1979 -7 /1979 47 /2024 2.07 1983 22.5*1983
12 45 26 0.09 0.2 74 /1999 23 /1979+ 3 /1964 47 /1965 1.77 1985 5.1 1979
13 46 26 0.09 0.3 65 /1974 21 /1979 -8 /1983 41 /1984+ 1.29 1972 11.7 2014
14 46 26 0.09 0.2 71 /1990 24 /2016+ -5 /1979 50 /1984 1.27 1984 3.4 1970
15 46 27 0.09 0.3 76 /2018 18 /2015 6 /2015 49 /2023 0.57 2021 4.2 2003
16 46 27 0.10 0.2 70 /1976 16 /2015 6 /2015 49 /1982 2.33*2003 15.9 2003
17 47 27 0.09 0.3 75 /1976 16 /1979 -4 /1979 55 /1976 1.36 1998 4.1 1967
18 47 27 0.10 0.2 75 /2011 8*/1979 -14*/1979 53 /2011 1.29 1964 2.5 1979+
19 47 27 0.09 0.3 71 /1997 15 /2015 6 /2015 50 /2017 1.34 1972 13.8 1979
20 47 28 0.10 0.2 77 /2018 19 /2015 -2 /1979 47 /2018 1.02 1996 4.7 2019
21 48 28 0.09 0.2 80*/2018 26 /1968 7 /1972+ 59*/2018 0.93 2015 8.9 2015
22 48 28 0.10 0.2 71 /1991 21 /1963 4 /1968 52 /1981 1.69 2003 3.5 1986
23 48 28 0.09 0.3 80*/2023 30 /1999 5 /1963 52 /2017 1.34 1987 8.9 1987
24 48 28 0.10 0.2 79 /1985 27 /2015 -4 /2015 53 /2017+ 1.52 1979 9.1 1966
25 49 29 0.10 0.2 79 /2000 21 /1967 6 /2015 47 /2000 1.20 1979 4.5 2007
26 49 29 0.09 0.2 69 /2024+ 26 /2003 7 /1970 44 /2020+ 0.93 1962 2.7 1993
27 49 29 0.09 0.2 74 /1997 27 /2003 8 /1968 49 /1997 0.60 2000 4.1 2003
28 49 29 0.10 0.2 70 /1976+ 28 /2014 10 /2014+ 47 /1997 1.13 1966 4.1 2005
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 6.27" 2003
DRIEST....0.25" 1978
SNOWIEST..46.1" 2010
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 46.1 MIN 26.7 AVG 36.4 PCP 2.61" SNW 7.0"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF MARCH FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 50 30 0.10 0.2 77 /1972 18*/1980 11 /1980 53 /2017 1.06 1997 6.1 1969
02 50 30 0.10 0.2 77 /1972 23 /1980 12 /1980+ 64*/1972 1.51 1994 5.1 2009
03 50 30 0.10 0.2 74 /1967 30 /2009 1 /2014 50 /1991 1.43 1997 4.9 2014+
04 51 30 0.10 0.2 79 /1983+ 29 /2014 -1*/2014 59 /2008+ 2.16 1993 0.6 2016+
05 51 31 0.10 0.1 79 /1976 32 /1962 7 /1978 55 /1979 1.41 1965 9.5 2015
06 51 31 0.11 0.2 78 /2022 27 /2015 6 /2015 50 /2024+ 2.30 2011 3.3 2013
07 52 31 0.12 0.2 77 /2022 25 /1989 2 /2015 51 /2022 1.53 1967 2.3 1969
08 52 31 0.11 0.2 84 /2000 26 /1996 11 /2007+ 57 /2009 1.16 1995 4.7 1984
09 52 32 0.11 0.1 82 /2016 27 /1984 14 /1996 46 /1964 0.99 2024 8.9 1999
10 52 32 0.11 0.2 80 /2016 33 /1984 7 /1996 59 /2016 1.41 2011 1.4 1993
11 53 32 0.11 0.1 79 /2021 31 /1969 13 /1996 49 /1967 0.82 1963 1.0 1963
12 53 32 0.11 0.2 89*/1990 36 /1998+ 18 /1998+ 54 /2021 1.41 1968 4.5 1968
13 54 33 0.11 0.1 87 /1990 32 /1984 16 /1998 55 /2012 1.63 1977 13.9*1993
14 54 33 0.12 0.2 88 /1990 25 /1993 15 /1993+ 55 /2007 0.99 1999 4.1 2017
15 54 33 0.12 0.1 84 /2012 31 /2017 -1*/1993 61 /1990 0.89 1967 1.4 1999
16 55 34 0.12 0.2 81 /1990 36 /1978 16 /1969 64*/1990 1.56 2007 6.6 2014
17 55 34 0.12 0.1 77 /1963 30 /2014 16 /1970 52 /1990 1.14 1993 4.5 2014
18 55 34 0.12 0.1 80 /1989 31 /1993 13 /1976 51 /2012+ 1.16 1998 1.5 1994
19 56 34 0.12 0.1 76 /2022+ 37 /1993+ 10 /1967 57 /2022 1.07 1975 1.5 1997
20 56 35 0.12 0.1 80 /2020 32 /1965 18 /1981 55 /2020+ 1.81 2003 2.2 1990
21 57 35 0.12 0.1 78 /2010 34 /2018 14 /1965 54 /2012 2.69*2019 4.8 2018
22 57 35 0.11 0.1 83 /1968 35 /2002 12 /1988 54 /2012 0.93 1977 1.2 1992
23 57 36 0.11 0.1 83 /2012+ 41 /1992+ 17 /1969 54 /2012+ 2.21 1991 T 1972+
24 58 36 0.12 0.1 79 /1994+ 39 /2014 19 /2014 55 /2012 1.79 1979 3.0 1990
25 58 36 0.11 0.1 78 /2017 33 /2014 17 /1971 56 /1988 0.96 1984 3.8 2014
26 59 36 0.12 0.0 81 /2021 33 /2014 17 /1983 57 /2021 1.55 1988 0.8 1971
27 59 37 0.11 0.1 85 /1998 40 /1982 15 /2014 58 /1998 1.19 1994+ 0.1 2011
28 59 37 0.12 0.1 86 /1989 37 /2015 18 /2001 64*/1989 1.40 1984 0.3 1996
29 60 37 0.11 0.0 86 /1998 39 /1984 20 /1982 60 /1985 1.33 2001 4.2 1984
30 60 38 0.12 0.1 89*/1998 37 /1964 22 /1970 63 /1977 1.24 1974 5.3 1964
31 61 38 0.12 0.0 85 /1998 39 /1964 17 /1964 62 /1998 1.55 2017 1.7 1964
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 7.65" 1993
DRIEST....0.07" 2006
SNOWIEST..19.8" 2014
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 54.8 MIN 33.6 AVG 44.2 PCP 3.50" SNW 3.9"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF APRIL FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 61 38 0.11 0.0 85 /1978 41 /1964 17*/1969 64 /2016 1.64 1973 0.6 1964
02 62 39 0.11 0.0 86 /1967 42 /1964 21 /1964 55 /2000 2.07 2005 T 1992+
03 62 39 0.12 0.0 86 /1981 46 /1987 23 /1991 59 /2015 0.70 2008 T 2016+
04 62 39 0.10 0.0 85 /2011 45 /1979+ 22 /2013+ 63 /1981 1.47 1987 0.2 1990
05 63 40 0.10 0.1 88 /2023 42 /1987 22 /1965 58 /2023 1.75 1960 T 2016+
06 63 40 0.11 0.0 93*/2010 42 /1970 24 /2016+ 61 /2010 1.57 2017 2.7*1990
07 64 40 0.11 0.0 91 /2010 42 /2007+ 21 /1977 65 /2010 1.33 1988 1.1 1990
08 64 41 0.12 0.0 87 /1991 38*/1972 24 /1970 60 /2019 1.15 2000 T 2000+
09 65 41 0.11 0.0 89 /2001 42 /1997+ 23 /1977 62 /1991 1.02 1998 2.6 1982
10 65 41 0.12 0.0 89 /2013 46 /1989 19 /1985 61 /2024 0.84 1983 T 1996+
11 65 42 0.11 0.0 87 /1977 46 /1973+ 25 /1971+ 64 /2024 0.74 2009 T 1986+
12 66 42 0.11 0.0 87 /1977 42 /1973 23 /1982 59 /2017 1.45 2004 1.0 1973
13 66 42 0.10 0.0 87 /2023+ 41 /1966 24 /1990 61 /2019 1.79 2020 T 1966
14 67 43 0.11 0.0 87 /1960 47 /1991+ 20 /1975 63 /2014 2.13 1970
15 67 43 0.11 0.0 87 /1967 47 /2007+ 28 /1997+ 62 /2023 1.96 1983 T 2020+
16 67 43 0.11 0.0 91 /2002 46 /2007+ 28 /1981 63 /2017 2.43 1993 T 1988
17 68 44 0.11 0.0 93*/2002 45 /2018 27 /1983 59 /2024+ 1.44 2000 T 1983
18 68 44 0.11 0.0 90 /1976 43 /2003 29 /2018 62 /2002 0.59 1978 T 2022
19 68 44 0.11 0.0 91 /2002 44 /1983 27 /2001+ 64 /2019 1.26 2019 T 2022
20 69 45 0.12 0.0 88 /2023+ 50 /1991 28 /1974 63 /1996 2.90 2008 T 1983
21 69 45 0.12 0.0 89 /1985 46 /1964 29 /1983 61 /2017 2.20 1992
22 69 45 0.12 0.0 92 /1985 47 /1972 27 /1975 62 /2016+ 2.88 2006 T 1993
23 70 46 0.13 0.0 88 /2001 47 /2012+ 30 /1989 66 /1977 0.67 1963 T 1986
24 70 46 0.12 0.0 85 /2011+ 48 /2005 30 /1989 61 /1975 1.25 1983
25 70 46 0.13 0.0 93*/1960 45 /1965 29 /1969 59 /1979 1.34 1973 T 2015
26 71 47 0.12 0.0 92 /2009+ 53 /1980+ 31 /1967 67 /2011 0.93 2004
27 71 47 0.13 0.0 92 /2009+ 48 /1967 31 /1987+ 68*/2011 1.65 1973 T 1994
28 71 48 0.13 0.0 88 /2021+ 44 /1966 32 /1993+ 62 /2009 1.68 2002
29 71 48 0.13 0.0 91 /2024 47 /1966 32 /1987 65 /2021+ 1.19 2014
30 72 48 0.13 0.0 88 /2024 49 /1964 29 /1977 66 /2017 3.99*2014
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 7.41" 2014
DRIEST....0.33" 1985
SNOWIEST.. 4.0" 1990
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 66.8 MIN 43.2 AVG 55.0 PCP 3.47" SNW 0.1"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF MAY FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 72 48 0.14 0.0 90 /2010 47*/1963 33 /1996 70 /2017 1.42 1981 T 1963
02 72 49 0.14 0.0 91 /2024 51 /1995 34 /1979+ 70 /2010 1.39 2016
03 72 49 0.14 0.0 92 /1965 56 /2023+ 32 /2005+ 67 /2010 1.03 1984
04 72 49 0.15 0.0 90 /2018+ 52 /1994 31 /1967 64 /2021+ 1.23 1996
05 73 50 0.14 0.0 88 /1980 51 /2003 29 /1976 62 /2006 2.34 1989 T 1998
06 73 50 0.15 0.0 90 /1986 54 /2016 36 /1968 62 /2024 1.18 2022
07 73 50 0.13 0.0 90 /2000+ 51 /1996+ 28*/1970 65 /2024 1.51 1967
08 73 51 0.15 0.0 90 /2000 54 /2006 29 /1974 66 /2000 2.10 1960
09 74 51 0.15 0.0 91 /1963 50 /2020 30 /1976 66 /1964 0.93 1974
10 74 51 0.15 0.0 90 /1963 55 /1966 31 /1983+ 66 /1979 1.61 1990
11 74 52 0.15 0.0 90 /1993 55 /2010 29 /1966 66 /2004 3.73*2008
12 74 52 0.16 0.0 90 /2018 50 /2008 34 /1969 66 /2015 1.37 1974
13 74 52 0.15 0.0 92 /2000 52 /1967 32 /1976 65 /2004+ 1.93 1971
14 75 52 0.16 0.0 89 /2010 55 /1967 32 /2013+ 66 /2004 1.87 2018
15 75 53 0.16 0.0 90 /1962 59 /2016 37 /2016+ 65 /2009+ 2.40 2003
16 75 53 0.15 0.0 90 /1998 58 /1989 35 /2000 66 /2009 1.97 2014
17 75 53 0.16 0.0 93 /1960 51 /2003 30 /1984 65 /1974+ 1.22 1970
18 75 54 0.15 0.0 91 /1987 54 /2003 33 /1973 68 /2015 3.13 1988
19 76 54 0.15 0.0 92 /1997+ 52 /1981 36 /2002 66 /2017+ 1.18 1988
20 76 54 0.16 0.0 93 /1996 57 /1987 36 /2002 69 /2019 1.86 2005
21 76 55 0.17 0.0 92 /2022+ 58 /2015 33 /1992 67 /2022+ 1.06 2003
22 76 55 0.16 0.0 91 /2024+ 57 /2016+ 31 /2002 69 /2022 2.07 2001
23 77 55 0.16 0.0 92 /2021+ 56 /2003 39 /2002+ 70 /2004 2.40 2010
24 77 55 0.16 0.0 90 /1964 58 /2005 36 /1963 69 /2004 0.83 2005+
25 77 56 0.16 0.0 92 /1991 56 /1973 36 /1967 67 /2004 1.76 1997
26 77 56 0.15 0.0 92 /2021+ 55 /1992 38 /1967 71*/2018 3.59 2009 T 2002
27 78 56 0.15 0.0 92 /2010+ 55 /1996 37 /1972 69 /2008+ 1.45 1968
28 78 57 0.16 0.0 90 /2019+ 54 /1968 37 /1994 70 /2020+ 2.16 1982
29 78 57 0.16 0.0 97*/1969 58 /1996 40 /1997 69 /2012 1.00 1984
30 78 57 0.15 0.0 95 /2006+ 57 /2021 38 /1996 70 /2011 2.65 1960
31 79 57 0.15 0.0 94 /2022+ 66 /1984 37 /1984 71*/2006+ 2.35 2018
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST..10.26" 2009
DRIEST....0.34" 2007
SNOWIEST..TRACE 2002
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 75.0 MIN 53.0 AVG 64.0 PCP 4.72" SNW 0.0"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Sun May 18 16:00:04 GMT 2025
DAILY NORMALS AND RECORDS FOR THE MONTH OF JUNE FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR
01 79 58 0.15 95 /2011 63 /2001+ 39 /1984 72 /2011 1.22 1969
02 79 58 0.15 93 /2023 64 /1974+ 41 /1993 69 /2022+ 2.93 1969
03 80 58 0.14 95 /2020 56*/1997 39 /1986 70 /2016 4.34 1991
04 80 59 0.15 91 /2020 59 /2003 40 /1977+ 70 /2016 1.63 2008
05 80 59 0.15 92 /2021 60 /2004 40 /1976 71 /2024 1.42 1963
06 80 59 0.15 93 /2021 65 /2000 39 /1976 70 /1981 1.83 1983
07 81 60 0.15 96 /1999 63 /1997 45 /1977 72 /2021+ 1.88 1989
08 81 60 0.15 97 /2007 67 /1963 36*/1977 73 /2021 1.71 2014
09 81 60 0.14 97 /2011 63 /1988 43 /1975 71 /2021+ 0.66 1977
10 82 60 0.15 99 /1964 62 /1998 43 /1988 74 /2020 1.16 2009
11 82 61 0.14 95 /2016 65 /2018 40 /1972 72 /2005 1.07 2004
12 82 61 0.15 96 /1986 69 /1995+ 44 /1980+ 72 /1986 1.88 1968
13 83 61 0.14 95 /2017 63 /1982 43 /1980 72 /2005 2.03 1982
14 83 62 0.15 98 /1994 67 /2007 41 /1979 73 /1994 1.02 2021
15 83 62 0.15 99 /1994 65 /1971 42 /1978 74 /1981 1.70 1960
16 83 62 0.14 96 /1994+ 58 /1965 47 /1978 73 /2022+ 2.82 2016
17 84 63 0.15 96 /2022 59 /1965 46 /1980 72 /1996 1.01 1979
18 84 63 0.13 94 /2018+ 68 /2012 45 /1965 73 /2017 1.14 1991
19 84 63 0.13 98 /1994 71 /2000 45 /1986 71 /2021+ 1.99 2003
20 85 63 0.13 97 /1964 64 /1999 48 /2022+ 72 /2019 1.49 1962
21 85 64 0.14 98 /1988 68 /1979 49 /1992 71 /2015 10.67* 1972
22 85 64 0.14 100 /2024 66 /2023+ 48 /1992+ 75 /2024 2.06 2001
23 85 64 0.14 98 /2024 61 /1972 44 /1992 78*/2024 0.59 2016
24 86 64 0.14 97 /2010 70 /1979 46 /1979 73 /2010 1.76 1994
25 86 65 0.14 97 /1966 73 /1974 44 /1979 71 /1981 5.94 2006
26 86 65 0.15 99 /2024 74 /1975+ 42 /1979 72 /2023+ 1.92 2006
27 86 65 0.14 100 /1964 73 /1974 44 /1979 72 /2021+ 1.47 2015+
28 86 65 0.14 97 /1966 63 /1974 44 /1970 74 /2021 1.06 1983
29 87 65 0.14 102*/2012 73 /1983 47 /1970 74 /2010 2.70 1975
30 87 66 0.14 98 /1964 71 /1983 51 /1989 74 /2024 1.25 1972
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST..18.19" 1972
DRIEST....0.52" 1988
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 83.1 MIN 61.9 AVG 72.5 PCP 4.30"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF JULY FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR
01 87 66 0.14 96 /2012 72 /1993+ 41*/1988 72 /2017+ 0.76 1984
02 87 66 0.15 98 /1966 69 /1978 44 /1988 75 /2022 2.36 1968
03 87 66 0.13 103 /1966 67 /1978 50 /1977+ 73 /2018+ 1.66 1978
04 87 66 0.14 97 /2002+ 72 /2016 48 /1986 75 /2018 1.87 2001
05 87 66 0.13 99 /1999+ 68 /1972 50 /1996+ 75 /2024 1.43 2005
06 87 66 0.13 102 /1977 73 /1972 45 /1979 76 /2024+ 1.68 2017
07 88 67 0.13 101 /2012+ 77 /1983 47 /1970 75 /2024+ 1.59 2005
08 88 67 0.14 101 /2012 70 /1980+ 48 /1984+ 78*/2010 1.96 2005
09 88 67 0.13 99 /1993+ 72 /2022 48 /1984 76 /2024 2.23 1970
10 88 67 0.14 99 /1993+ 73 /1969 53 /1963 77 /2024 1.63 1995
11 88 67 0.13 98 /1988 74 /1965 52 /1983 74 /1989 3.71 2013
12 88 67 0.13 97 /1986 71 /1999 47 /2002 74 /2021 2.61 1990
13 88 67 0.14 97 /1986+ 66*/1990 52 /1978 75 /2021 1.30 1975
14 88 67 0.14 98 /2024+ 71 /1963 53 /2009 74 /2024 1.56 2002
15 88 67 0.14 99 /2024 77 /2000+ 53 /1987+ 75 /2024 1.01 2005
16 88 67 0.14 104 /1988 74 /1989 57 /1991+ 74 /2013 1.65 1989
17 88 67 0.14 100 /1997+ 78 /1989 55 /2014+ 75 /2024+ 1.11 2018
18 88 67 0.15 101 /2012 77 /2001 51 /1985 74 /2019+ 1.66 2017
19 88 67 0.13 98 /2020+ 77 /2000 53 /1976 77 /2013 1.52 1968
20 88 67 0.14 101 /1980 77 /1965 55 /1974 75 /2020+ 2.28 1970
21 88 67 0.13 101 /1991 69 /2012 48 /1966 77 /1987 5.02* 2018
22 88 67 0.13 105*/2011 70 /1996 50 /1974 76 /2011 2.25 1969
23 88 67 0.13 99 /2011+ 71 /1970 50 /1983+ 76 /2011 1.51 1988
24 88 67 0.14 99 /2010 68 /1997 48 /1985 78*/2010 0.86 2020
25 88 67 0.12 100 /2016 72 /2004 55 /1976 76 /1965 1.54 1992
26 88 67 0.13 98 /2012+ 70 /2002 50 /1976 76 /2016+ 0.76 1989
27 88 67 0.12 98 /2023+ 79 /1994+ 52 /1977 75 /2016 3.50 1994
28 88 67 0.13 99 /1993 76 /1984 47 /1977 75 /1963 1.65 2000
29 88 67 0.12 103 /2011 66*/2001 52 /2014 74 /2002 0.92 2001
30 88 67 0.13 98 /1988 67 /1972 48 /2014 76 /2011 1.29 2018
31 88 67 0.13 98 /1999 70 /1989 50 /1997 75 /2004 1.87 1978
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST..11.21" 2018
DRIEST....0.86" 1962
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 87.6 MIN 66.8 AVG 77.2 PCP 4.15"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF AUGUST FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR
01 87 67 0.12 100 /1980 75 /1985 54 /1997 74 /2006 1.09 2018
02 87 67 0.11 101 /2024 78 /1976 52 /1998 77 /2020 1.37 2004
03 87 67 0.13 99 /2006+ 75 /1964 50 /1998+ 75 /2006 1.03 1970
04 87 67 0.12 99 /2002 75 /1964 51 /1976 75 /2012 1.87 2020
05 87 66 0.12 99 /1995 76 /1969+ 54 /1992+ 76 /1989 1.78 1990
06 87 66 0.12 96 /2024+ 69 /1993 50 /1966 76 /2024 2.49 1986
07 87 66 0.12 97 /2007 74 /2017 49 /1994 76 /2024 2.33 2000
08 87 66 0.12 101 /2007 75 /1989+ 49 /1989 79*/2007 1.39 2024
09 87 66 0.12 97 /2001+ 67 /1990 47 /1989 75 /2013 2.28 1969
10 87 66 0.11 97 /2009 74 /1989 51 /1999 75 /2016+ 2.38 1984
11 87 66 0.11 99 /2021 69 /1989 47 /1972 75 /2016+ 4.68* 1984
12 87 66 0.11 100 /2021 64*/1979 51 /1962 77 /2016 2.07 1996
13 87 66 0.11 99 /2021+ 72 /1996 50 /1964 78 /2016 1.48 2003
14 87 66 0.11 100 /1985 72 /2004 49 /1983 76 /2016 1.12 2008
15 87 66 0.11 102 /1988 66 /1992 45 /1964 75 /1988 2.18 2019
16 87 65 0.10 100 /1997 70 /1992 46 /1979 73 /1997+ 1.45 2003
17 87 65 0.11 101 /1988 71 /1972 44 /1979 75 /1995 3.32 1997
18 86 65 0.11 98 /2009 71 /1985 45 /1981 75 /2017 1.39 2010
19 86 65 0.11 95 /2019+ 73 /1997 51 /1998 74 /2002 1.54 1967
20 86 65 0.11 104*/1983 70 /1997 47 /1998+ 74 /2002 2.17 1963
21 86 65 0.10 96 /1962 70 /2007+ 47 /1976 76 /1962 2.72 2018
22 86 65 0.11 101 /1983 69 /1990 49 /2024 73 /1975 0.94 2009
23 86 65 0.12 96 /1998 70 /1967 47 /1981 76 /2002 1.60 2001
24 86 64 0.11 97 /1998 70 /1967 46 /1987+ 73 /2021+ 3.88 1967
25 85 64 0.13 97 /2023+ 74 /1987+ 47 /1971 72 /2007+ 3.03 1999
26 85 64 0.12 95 /2016+ 75 /2019 48 /1977 74 /2023+ 1.48 1965
27 85 64 0.12 100 /1987 70 /2005 46 /1969 73 /2023 1.98 1971
28 85 64 0.11 99 /2024 69 /2002+ 44 /1986 74 /1993 1.73 2002
29 85 63 0.11 98 /1991 67 /2017 38*/1982 74 /2018 1.92 2024
30 85 63 0.11 99 /1991 73 /2002+ 41 /1986 72 /2021+ 1.21 1978
31 84 63 0.11 98 /1991 72 /1975 43 /1976 73 /2000+ 3.21 1975
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST..10.71" 1984
DRIEST....0.23" 1962
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 86.3 MIN 65.2 AVG 75.7 PCP 3.53"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Fri Sep 13 16:00:05 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF SEPTEMBER FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR
01 84 63 0.12 98 /1980+ 65 /2002 49 /1976+ 73 /2000 2.76 2006
02 84 63 0.12 99 /1980 61 /2017 44 /1970 72 /2020+ 0.97 1969
03 84 62 0.13 99 /2023 73 /1986+ 45 /1967 77*/1993 1.47 1969
04 83 62 0.12 99 /2023 70 /1981 48 /1997 72 /2018 1.29 1996
05 83 62 0.12 99 /2023 68 /2006 42 /1997 74 /2023 3.78 1979
06 83 61 0.12 100*/2023 63 /2011 45 /1976+ 72 /2018+ 5.11 2008
07 82 61 0.12 97 /2023 68 /1974 41 /1976 72 /2018 1.11 2011
08 82 61 0.12 96 /2016 69 /1986 43 /1984 72 /2016+ 3.56 1987
09 82 61 0.13 98 /2016 64 /2018 40 /1986 74 /2016 1.40 2018
10 82 60 0.12 99 /1983 68 /2018+ 43 /1981 74 /2020 1.50 1968
11 81 60 0.13 99 /1983 69 /2009+ 40 /1976 72 /1971+ 1.45 2023
12 81 60 0.13 95 /2019+ 67 /2003 40 /1967 71 /1963 1.18 1965
13 80 59 0.13 94 /1974 61 /1964 43 /1985 71 /2018 0.68 1983
14 80 59 0.14 95 /1998 64 /1963 37 /1985 72 /2018 5.52* 1966
15 80 58 0.14 95 /1998+ 60 /1963 38 /1985 71 /2005+ 1.06 1981
16 79 58 0.15 97 /1991 62 /2011+ 37 /1984 69 /2021+ 2.05 1999
17 79 58 0.14 97 /1991 64 /2011 35 /1986 71 /2018+ 1.71 2004
18 79 57 0.15 91 /1978 67 /1990+ 37 /1990 70 /2016 1.76 2003
19 78 57 0.14 93 /1978+ 63 /2000 36 /1984 69 /2016 1.26 2000
20 78 56 0.14 91 /1965 62 /1966 40 /1979 70 /1988 0.87 1966
21 77 56 0.13 92 /1998+ 62 /1973+ 33 /1962 70 /1989+ 2.59 1979
22 77 56 0.12 94 /2010+ 63 /1994 35 /1962 72 /1989+ 1.57 1982
23 77 55 0.12 94 /2019 57 /1995 33 /1983 68 /2019+ 1.74 2003
24 76 55 0.13 97 /2010 55 /1995 30*/1974 72 /2009 2.17 2001
25 76 54 0.13 93 /2010 56 /1992 33 /1983 68 /2010 2.67 1975
26 75 54 0.13 93 /2007 53 /2000 38 /1983+ 70 /2018+ 2.15 1975
27 75 53 0.14 96 /1998 54 /1966 35 /1984 69 /2011 1.55 1985
28 75 53 0.14 86 /2019+ 47*/1984 34 /1989 66 /1999 1.61 2004
29 74 52 0.14 89 /2019 60 /1964 34 /1978 69 /2015 2.23 1963
30 74 52 0.15 92 /1986 57 /1993 35 /1993 68 /2019+ 4.74 2010
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST..11.26" 1975
DRIEST....0.15" 2005
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 79.3 MIN 57.9 AVG 68.6 PCP 3.94"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Fri Sep 27 16:00:12 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF OCTOBER FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 73 52 0.13 0.0 90 /1986 55 /1984 31 /1993 67 /2019 4.06 1979
02 73 51 0.13 0.0 96*/2019 50 /2011 32 /1998+ 69 /2019 2.35 2012
03 73 51 0.12 0.0 86 /2018+ 49 /1974 30 /2003+ 72 /2019 0.86 1987
04 72 50 0.13 0.0 90 /2013 55 /2022 26 /1974 69 /1986 0.81 1999
05 72 50 0.12 0.0 90 /2013+ 57 /1965 32 /1970 66 /1995 2.04 1971
06 72 49 0.13 0.0 89 /2013 57 /2006 28 /1968 67 /2021 1.05 2006
07 71 49 0.12 0.0 91 /2007 52 /2012 31 /1988 69 /2005 3.50 2005
08 71 48 0.13 0.0 92 /2007 51 /2012 30 /2001 73*/2017 2.79 2005
09 70 48 0.12 0.0 94 /2007 51 /2000 26 /2001 69 /2018+ 2.53 1976
10 70 48 0.11 0.0 87 /2017 44 /1979 31 /1978+ 69 /2018 2.22 2013 1.3*1979
11 70 47 0.12 0.0 86 /2010 54 /1979 28 /1972 65 /2017 3.38 2013
12 69 47 0.11 0.0 83 /2010+ 54 /1988 25 /1964 63 /1983 0.78 1990
13 69 46 0.11 0.0 84 /1989 52 /1988 30 /2012+ 66 /1990 1.92 2011
14 69 46 0.11 0.0 86 /1975 51 /2009+ 23 /1988 63 /2014 1.61 1995
15 68 46 0.12 0.0 88 /1989 49 /2009 28 /1987 64 /1985 1.30 2014
16 68 45 0.12 0.0 85 /1989 44 /2009 30 /1986 61 /2008 1.10 2002 T 1977
17 67 45 0.11 0.0 84 /2016 45 /2009 31 /1982+ 62 /1989 1.11 1975
18 67 44 0.12 0.0 85 /2016 51 /1972+ 27 /1982+ 60 /1968 2.09 1996
19 67 44 0.12 0.0 87 /2016 42 /1972 25 /1976 64 /2016 1.36 1966 0.1 1972
20 66 44 0.12 0.0 83 /2016+ 44 /1974 20 /1972 65 /2016 1.44 2019 T 1974
21 66 43 0.12 0.0 86 /1979 49 /1974 22 /1972 60 /1979 2.45 1995
22 66 43 0.12 0.0 85 /1979 51 /1997 26 /1974 66 /1984 0.90 1985
23 65 43 0.12 0.0 85 /1978 48 /1969 21 /1969 67 /2007 2.63 1990
24 65 42 0.11 0.0 84 /2001 50 /2006+ 15*/1969 61 /1971 1.69 2009
25 65 42 0.12 0.0 81 /2023 46 /2005 27 /1969 63 /1971 3.39 1971
26 64 41 0.11 0.0 84 /2023 48 /2018+ 26 /1988+ 61 /2010 1.76 1977
27 64 41 0.10 0.0 84 /1963 43 /1976 21 /1988 65 /2010 1.89 2003
28 64 41 0.11 0.0 86 /2023 46 /1976 22 /1976 63 /1984 1.97 2015
29 63 41 0.12 0.0 82 /1984 39*/2011 19 /1976 61 /2023 4.25*2012 0.6 2011
30 63 40 0.11 0.0 84 /2016 39*/2002 20 /1969 58 /2019+ 1.00 2012
31 62 40 0.11 0.0 81 /2004+ 45 /1993 21 /1968 66 /1971 1.35 2019
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 9.22" 2005
DRIEST....TRACE 1963
SNOWIEST.. 1.3" 1979
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 67.8 MIN 45.3 AVG 56.6 PCP 3.65" SNW 0.0"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF NOVEMBER FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 62 40 0.11 0.0 84*/1982 46 /1992 25 /1975 68*/1971 1.07 1963
02 62 39 0.11 0.0 84*/1971 49 /2021+ 21 /1976 65 /1971 1.32 2018
03 61 39 0.11 0.0 81 /1990+ 44 /2006 22 /1980 63 /1977 0.72 1970
04 61 39 0.11 0.0 81 /2003+ 40 /1991 21 /1966 66 /1977 1.95 1970 T 1991+
05 61 38 0.11 0.0 81 /2022 43 /1991 19 /1991 66 /1977 1.60 2003 T 1973
06 60 38 0.10 0.0 80 /2015 43 /1967 16 /1991 66 /2022 2.42 1963
07 60 38 0.11 0.0 79 /2023+ 43 /2012+ 22 /1991+ 60 /2022 2.31 1997
08 59 38 0.11 0.0 77 /2020+ 39 /1976 18 /1967 57 /1977 2.14 1996 T 1995+
09 59 37 0.11 0.0 81 /2023 40 /1991 19 /1976+ 56 /1987+ 0.54 2015 T 1991+
10 59 37 0.11 0.0 77 /2020 41 /1991 21 /2003 60 /1966 2.08 1990 1.6 1968
11 58 37 0.10 0.0 78 /2006 34 /1987 16 /1973 62 /2020 1.21 2020 5.3 1987
12 58 36 0.10 0.0 74 /1964 41 /1996+ 22 /1988+ 57 /1985 1.92 2004 4.2 1968
13 58 36 0.10 0.0 75 /1964 37 /2019 19 /2019 55 /1985 0.87 2012 T 2014+
14 57 36 0.10 0.0 80 /1985 35 /1996 13 /1986 55 /1993 1.90 1972 0.7 1996
15 57 36 0.10 0.0 81 /1993 35 /1969 19 /1986 58 /1993+ 1.50 2018 3.0 2018
16 56 35 0.10 0.0 74 /2005+ 37 /1967 14 /1967 55 /2006 1.75 1989 T 2014+
17 56 35 0.10 0.1 75 /1963 37 /1980 17 /1976 53 /1993+ 1.03 1987 T 1980+
18 56 35 0.10 0.0 76 /1963 36 /2014 18 /2014 49 /1994 0.57 1968
19 55 35 0.10 0.0 76 /1985 35 /2014 13 /2014 55 /1985 1.93 2003 T 2016+
20 55 34 0.10 0.0 79 /1985 36 /1986 18 /1980 58 /1985 0.75 1983 T 2000+
21 54 34 0.10 0.0 76 /2007 30*/1987 16 /1969 62 /1991 2.15 2023 0.2 1987
22 54 34 0.10 0.0 75 /2007 35 /1989 14 /2014+ 56 /1991 1.54 1991 2.2 1989
23 54 34 0.10 0.0 70 /1990 34 /2018+ 14 /1984+ 56 /1999 1.25 1992 0.3 2005+
24 53 33 0.11 0.0 74 /1979 32 /2013 9*/1989 62 /1979 1.81 1971 2.9 1971
25 53 33 0.10 0.1 77 /1979 34 /2005 15 /1970 58 /1979 1.31 1964 0.3 1983
26 53 33 0.11 0.0 75 /1990 36 /1974 16 /1974 51 /1992 1.72 2013 1.6 2014
27 52 33 0.11 0.0 70 /2011 35 /1978+ 11 /1974 56 /1988 2.59*1993 2.9 1978
28 52 33 0.10 0.0 71 /1998+ 31 /1996 19 /1996 57 /1990 2.23 1993 T 2014+
29 51 32 0.10 0.1 73 /1998 35 /1977 17 /1967 58 /2001 2.04 1963 3.3 1995
30 51 32 0.11 0.0 72 /1991 30*/1976 11 /1976 62 /2001 1.38 2020 11.4*1967
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 7.83" 1963
DRIEST....0.24" 1981
SNOWIEST..11.4" 1967
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 56.5 MIN 35.6 AVG 46.0 PCP 3.13" SNW 0.3"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
DAILY NORMALS AND RECORDS FOR THE MONTH OF DECEMBER FOR DULLES AIRPORT
DAILY TEMP NORMALS AND EXTREMES GREATEST PRECIP FOR CALENDAR DAY
DY NMX NMN NPCP NS RMX /YEAR LOMX/YEAR RMN /YEAR HIMN/YEAR MXPCP YEAR MXSN YEAR
01 51 32 0.11 0.1 75 /2006 30 /1964 4 /1967 55 /1991 2.02 1974 T 1992+
02 50 32 0.11 0.0 75 /1970 35 /1971+ 0 /1967 52 /1982 1.42 1986 T 2019+
03 50 31 0.12 0.1 74 /1998 26 /1976 7 /1976 54 /1982 1.14 1967 T 2005+
04 50 31 0.11 0.0 75 /1998 29 /1966 10 /1966 60 /1982 1.18 1993 1.0 2003
05 49 31 0.12 0.1 77 /2001 28 /2002 12 /1966 59 /1982 1.02 2003 6.2 2002
06 49 31 0.12 0.1 79*/1998 32 /2007+ 9 /2002 56 /2011 1.03 2016 1.0 2003
07 49 31 0.11 0.1 77 /1998 30 /1984 1 /2002 58 /1998 2.14 2011 1.6 1969
08 48 30 0.11 0.1 76 /1980 30 /1989 13 /2002 49 /1998 1.24 1972 5.0 1989
09 48 30 0.12 0.1 72 /1978 26 /1989 11 /1989 51 /1966 1.12 1973 4.0 2017
10 48 30 0.11 0.0 70 /1966 25 /1968 4 /1989 55 /1966 2.26 1992 2.6 1992
11 48 30 0.12 0.1 71 /1979 28 /1995+ 3 /1968 46 /2021 1.34 2008 0.5 1962
12 47 30 0.11 0.1 72 /1979 23 /1962 9 /1988 46 /1965 0.95 1964 10.6 1982
13 47 29 0.11 0.1 73 /2015 25 /1962 7 /1988 52 /1991 1.47 1996 8.8 1966
14 47 29 0.11 0.1 69 /2015 25 /2010+ 3 /1989 57 /2015 1.24 2020 3.6 2003
15 47 29 0.11 0.1 71 /1971 29 /2017 5 /1989 45 /2008 2.49 2018 4.7 1981
16 46 29 0.11 0.1 72 /1971 24 /2010+ 9 /2016 44 /1971 1.30 2020 5.2 1973
17 46 29 0.10 0.1 70 /1984 21 /1989 3 /1989 53 /2021 1.91 2023 4.3 1973
18 46 29 0.11 0.1 76 /2006 25 /1989 3 /1989 49 /1984 2.92*1977 2.0 2009
19 46 28 0.10 0.1 63 /1967 25 /1989 -2 /1989 42 /1984 1.34 2009 16.0*2009
20 45 28 0.11 0.0 64 /1988 22 /2004 8 /1991 43 /2011 0.66 1973 4.3 1966
21 45 28 0.10 0.1 70 /2013 25 /1989 4 /1989 51 /2013 1.15 1973 5.8 1962
22 45 28 0.10 0.1 71 /2013 15 /1989 2 /1989 62 /2013 2.14 2022 3.3 1962
23 45 28 0.11 0.1 68 /1990 20 /1989 4 /1989 61 /1990 1.30 2004 7.5 1963
24 45 28 0.10 0.1 71 /2015 22 /2022+ 1 /1983 63*/2015 2.01 1986 8.3 1966
25 44 27 0.10 0.1 71 /1982+ 11*/1983 -4*/1989 58 /2015 0.82 1969 6.0 1969
26 44 27 0.09 0.1 71 /1964 21 /1985+ -1 /1983 51 /2015+ 1.41 2012 6.1 1969
27 44 27 0.10 0.1 73 /1971 23 /1989 1 /1989 52 /1971 1.04 1964 4.4 1990
28 44 27 0.10 0.1 73 /1984 23 /2017 8 /1966 49 /2023 1.74 1967 2.3 1993
29 44 27 0.09 0.1 78 /1984 23 /1993 7 /1977 50 /1984 1.27 2013 3.3 1962
30 44 27 0.09 0.2 67 /1990 20 /1983 4 /1963 48 /2021 0.87 1969 0.9 1977
31 43 27 0.09 0.1 73 /1992 20 /1962 1 /1993 51 /2021 1.90 1975 8.5 1970
* EXTREME EVENT FOR THE MONTH
+ EVENT ALSO OCCURRED IN PREVIOUS YEARS
MONTHLY PRECIPITATION EXTREMES: WETTEST.. 6.74" 1969
DRIEST....0.42" 1965
SNOWIEST..24.2" 1966
NORMALS BASED ON PERIOD 1991-2020
MONTHLY NORMALS: MAX 46.5 MIN 29.0 AVG 37.7 PCP 3.30" SNW 2.8"
KEY...
DY=DAY OF MONTH
NMX=NORMAL DAILY MAX(F)
NMN=NORMAL DAILY MIN(F)
NPCP=NORMAL DAILY PRECIP (IN)
RMX=DAILY RECORD HIGH MAX(F)
LOMX=DAILY RECORD LOWEST MAX(F)
RMN=DAILY RECORD LOW MIN(F)
HIMN=DAILY RECORD HIGHEST MIN(F)
MAXPCP=DAILY MAX PRECIP (IN)
MXSNO=DAILY MAX SNOWFALL (IN)
CALENDAR DAY MEANS/EXTREMES ARE BASED UPON LOCAL STANDARD TIME (LST)
MIDNIGHT-TO-MIDNIGHT.
Last updated: Tue Aug 27 12:00:45 GMT 2024
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