St. Louis, MO

Weather Forecast Office

St. Louis, Columbia and Quincy Dewpoint Climatology

St. Louis, MO
Columbia, MO
Quincy, IL

January
February
March
April
May
June
July
August
September
October
November
December
Miscellaneous

January Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	61	2005	23	-17	1968
2	62	2004	25	-10	1979
3	62	1950	26	-4	1979
4	60	1997*	24	-21	1947
5	60	1955	22	-20	1972
6	58	1955	23	-20	2014
7	59	1989	22	-17	1968
8	57	2008*	23	-16	1970
9	51	1954	22	-13	1962
10	57	1975	23	-29	1982
11	58	2018	24	-20	1982
12	61	1960	24	-12	1974
13	61	1950	23	-12	1954
14	57	1952*	23	-18	1972
15	56	1952*	23	-20	1972
16	57	1980	21	-25	1977
17	59	1952	23	-21	1977
18	63	1974	22	-20	1994
19	55	1974	22	-15	1985
20	57	1954	23	-30	1985
21	55	1957	23	-19	1970
22	57	1957	25	-18	1970
23	57	1967*	24	-9	1963
24	59	1967*	23	-18	1963
25	62	1950	22	-9	1961
26	56	1954	22	-16	1978
27	56	1999	21	-13	1963
28	59	2013	21	-24	1977
29	61	2013*	22	-20	1966
30	54	2013*	21	-20	2019
31	52	1988	22	-18	1965

February Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	56	1968	25	-14	1971
2	58	2016	23	-18	1996
3	59	2003	23	-26	1996
4	59	1986	23	-18	1996
5	59	2008*	23	-13	1979
6	55	1946	24	-15	1982
7	58	2017	23	-11	1947
8	57	2001	23	-12	1947
9	59	2001	22	-18	1975
10	58	1999*	24	-14	1982
11	63	1999	24	-18	1981
12	59	1984	23	-10	1981
13	55	2005	25	-5	1988*
14	56	2005	27	-10	2021
15	58	2018	26	-8	2020
16	61	1976	26	-14	2015
17	59	1961	26	-16	1958
18	57	1991	28	-12	2006
19	60	2018	28	-9	2006
20	63	2018	29	-5	2015
21	63	1997	29	-12	1963
22	59	2023*	28	-10	1963
23	58	1985*	29	-9	1968
24	61	2001	29	-9	1967
25	60	2001	27	-12	1967
26	62	1996	27	-10	1967
27	61	1996	28	-9	2014
28	62	1981	28	-7	2014
29	59	2012	28	-2	1996

March Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	60	2017*	29	-1	1962
2	61	1976	28	-4	1980
3	60	1974*	28	-10	2014
4	64	1976	29	-7	2019
5	63	2004	30	-9	1960
6	60	1974*	30	-5	1960
7	63	1974	31	3	1996
8	65	1974	30	-7	1996
9	67	1974	31	-4	2003
10	66	1974	31	-1	2003
11	62	1990*	31	-4	1948
12	65	2006	34	-16	1948
13	64	2006	34	1	1948
14	66	1973	34	-5	1993
15	65	2012	33	6	2017*
16	62	1984	32	8	2017
17	64	2012	34	7	2014*
18	62	2012	35	5	1965
19	63	2020*	35	-4	1965
20	66	2004	35	-4	1965
21	65	1948	33	3	1986
22	63	1991	33	3	1986
23	64	1975	34	5	1996
24	61	1994*	36	0	1974
25	63	2004*	36	5	1974
26	64	2004*	35	-6	1955
27	64	2004*	38	5	1955
28	66	2020	39	13	2001*
29	64	2007	39	3	1964
30	63	2007*	39	3	1964
31	64	1963	39	8	1964

April Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	64	2012	37	11	1954
2	66	1946	39	10	1954
3	65	1999*	42	12	1971
4	65	2023	38	12	1995
5	68	2010	38	11	1995
6	67	2001	38	6	1979
7	66	1948	40	6	1990
8	65	2015	40	11	1956
9	66	1999	38	8	1997
10	68	2001	40	14	2020*
11	68	1981	41	14	1989
12	69	1972	40	13	1957
13	69	1981	41	11	1950
14	67	1981	42	13	2020
15	66	2002*	43	16	2020*
16	66	2002*	43	12	1961
17	69	2002	43	17	1961
18	70	2002	45	17	1956*
19	72	2002	46	14	1988
20	71	2002	46	14	1988
21	68	2002	45	19	2021
22	72	1985	47	18	2021*
23	67	2011*	47	18	2015
24	70	2002	47	19	1968*
25	66	2007	48	20	1968
26	66	1985*	46	23	1950
27	73	1985	47	24	2012
28	70	1975	47	23	2008
29	71	1970	48	18	1958
30	70	1970	50	22	1988

May Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	70	2002	49	16	1978
2	70	2002	49	22	1961
3	68	1958	48	20	1978
4	70	1977	49	22	1954
5	71	2012	50	22	1992
6	72	2002	51	21	1989
7	72	2002*	52	24	1992
8	75	2000	52	23	1980
9	77	2003	52	24	2020
10	75	2003	52	22	1966
11	73	2022*	53	25	1989*
12	75	2000	53	25	2021*
13	73	1995	52	24	2021
14	72	1995*	52	27	2016
15	72	1998	53	25	1997
16	72	1998*	54	21	1997
17	73	1991*	55	27	2014
18	73	1974*	54	23	1994
19	74	1974	55	32	2008*
20	75	2004	55	25	1954
21	76	2004	55	26	2002
22	72	1975*	55	27	1997*
23	73	1998	56	27	1961
24	72	2010*	57	25	1956
25	73	1991*	58	24	1988
26	73	1990*	59	29	1961
27	76	2004	58	28	1951
28	73	2018*	58	33	1992
29	74	1991	57	32	1948
30	76	2004*	59	26	1961
31	74	1998	59	35	1972

June Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	73	1991	58	33	1966
2	74	1990	59	39	1956
3	74	2018	58	34	1988
4	73	2011	59	34	1988
5	74	1986*	60	35	1988
6	74	1981	60	35	1958
7	75	2004*	61	40	1958
8	75	2004*	62	35	2023
9	80	1981	62	35	2023*
10	79	1981	62	29	1988
11	78	1958	63	31	1972
12	76	2022*	63	35	1972
13	78	2022	63	37	1965
14	77	2022	63	33	1959
15	77	1973	63	41	2020*
16	79	2004	63	38	1961
17	78	2004	63	40	1959
18	79	1990	63	40	1965
19	78	1998	64	45	1965
20	77	1981*	64	39	2003
21	77	1996*	64	34	1963
22	77	2010*	65	39	1992
23	78	2000	65	43	1961
24	77	2000	64	39	1972
25	77	2009*	64	43	2017*
26	78	1977	65	42	2012
27	79	1980*	65	43	1988*
28	80	1980	65	44	1987
29	78	1998*	64	43	2016*
30	79	2018	65	47	2008*

July Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	77	1973*	66	44	1982
2	79	2004*	65	43	1988
3	79	2000	65	41	1946
4	79	1980	66	43	1946
5	80	1980	66	43	1972
6	79	2004*	66	41	1972
7	79	1996	66	44	2018*
8	79	2004*	66	38	1961
9	80	2004	66	44	1963*
10	80	2000	66	41	1963
11	80	2004*	66	45	1961
12	81	2000	66	45	1959
13	80	1995	67	44	1950
14	83	1995	67	42	2001
15	79	1980	67	48	1954*
16	78	1977	66	43	1954
17	78	2022*	67	41	1954
18	79	2010	68	46	1979
19	82	1981	69	50	1984
20	80	1981	69	50	1966
21	79	2006	69	45	1966
22	78	2004*	68	40	1966
23	79	2011*	67	42	1947
24	79	2011	66	46	1947
25	78	2016*	67	50	1954
26	79	1997	67	43	1962
27	79	2003*	67	43	1962
28	78	2003*	67	45	2013
29	77	2021*	67	47	2013
30	78	1987	67	48	1984
31	78	1999	67	47	1952

August Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	77	1987*	65	47	1947
2	79	2008*	66	51	2012*
3	81	2004	67	47	1974
4	83	2004	67	48	1950
5	79	2008*	66	46	1994
6	79	2000	66	47	1997
7	79	2011	66	43	1989
8	77	1982*	66	44	1989
9	78	1995*	66	47	1989
10	80	2010	66	50	1964
11	78	1992	65	43	2012
12	79	1999	65	44	2012
13	79	1995	66	47	1964
14	79	2000	65	47	2013
15	79	2010	66	45	1963
16	79	1995	66	49	1992
17	80	1995	67	44	2012
18	82	1995	67	44	2012
19	81	1995	66	36	2012
20	80	2023	65	36	2012
21	81	2023	64	42	1950
22	80	2023	64	45	1952*
23	78	2014*	64	48	2012*
24	77	2014*	64	46	2015*
25	78	2014*	64	42	1958
26	82	2004	66	46	1953
27	79	2004*	67	39	1967
28	77	2003*	66	36	1986
29	79	2003*	65	36	1986
30	81	2000	65	41	1986
31	83	1997	65	41	1984

September Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	79	1997*	64	37	1949
2	79	1975	63	37	1955
3	79	2000*	63	42	1955
4	79	2000	62	43	1997*
5	77	1985	61	38	2011
6	78	1985	61	37	1956
7	77	1985	61	35	1956
8	76	1985	62	36	1986
9	76	1985*	62	37	1986*
10	77	1947	61	32	1976
11	75	2000*	60	35	1976
12	75	2008*	59	31	2007
13	77	1982	58	33	2007
14	77	1982	58	31	2013
15	74	2004*	57	28	2011
16	75	2004	58	30	2007
17	74	1972*	58	34	1959
18	75	1988*	59	37	1995
19	77	1972	59	28	1991
20	74	2018*	59	29	1962
21	74	1964	57	26	1983
22	75	1980	56	22	1995
23	74	1984	54	18	1989
24	76	1984	53	25	1989
25	75	1984	54	27	1950
26	74	1977*	54	30	1991*
27	72	1986*	53	32	1991
28	73	1973	52	27	1957
29	72	1986*	52	28	1992*
30	70	1965	52	30	1972

October Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	73	1977	51	27	1958
2	73	2002	51	24	2003*
3	73	2002	51	24	1987
4	73	1959*	51	23	1987
5	72	2017*	50	22	1952
6	73	1982	50	19	1952
7	72	2018	48	18	2000
8	72	1982*	49	23	2000*
9	74	1982	50	20	1956
10	73	2017	49	22	1958
11	70	1949	48	25	1988
12	72	1962	49	15	2006
13	70	1969	48	7	2006
14	70	1984	47	13	2006
15	71	1984	48	16	2006
16	71	1984	47	19	2020
17	71	1984	46	15	2022
18	69	1985	45	16	1992
19	70	1985	43	10	2022
20	68	1971	44	15	2022
21	68	1949	45	14	1952
22	68	1983	46	10	1952
23	68	2004	45	15	1952
24	67	2001	44	17	1988
25	70	1971	43	15	1962
26	69	1984	43	12	2008
27	68	1984	43	11	2008
28	70	2004	42	8	1952
29	70	2004	41	6	1952
30	67	2009*	43	11	1952
31	68	2003*	44	17	1996

November Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	66	1982*	43	15	2020
2	66	1983*	42	4	1951
3	66	1994	40	4	1991
4	66	1994	39	5	1991
5	69	2017	39	8	1995*
6	66	1975	38	11	1959
7	63	1996	37	4	1971
8	64	2005	36	-1	1991
9	64	1975	37	-2	1991
10	63	2020*	36	7	2018
11	63	2003*	35	12	2018*
12	63	2003*	35	2	2019
13	66	1985	34	1	1986
14	66	1985	36	4	1969
15	66	1964*	38	9	1969
16	67	1964	36	8	1955
17	68	1958	35	-7	1959
18	65	1985	36	1	1959
19	64	1985	36	8	2022
20	66	1982	35	7	2022
21	64	1982	34	3	1964
22	62	1979	33	6	1964
23	65	1983	34	-1	1950
24	63	1973	32	-7	1950
25	62	1966	32	-10	1950
26	64	1990	34	-2	1977
27	65	1990	34	6	2013*
28	61	1998	29	-5	1955
29	60	1998	29	4	1989*
30	62	1975	31	-6	1958

December Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	62	1982	29	0	2002
2	68	1982	30	1	1985
3	68	1982	32	3	1989*
4	63	1999	32	1	1991
5	61	1998	31	-2	1995
6	62	1998	28	-7	1984
7	62	1966	27	-4	1950
8	61	1991*	27	1	1962
9	59	1946	27	-10	1995
10	60	2021	26	-9	1995
11	65	1949	28	-5	1962
12	61	1991	28	-15	1962
13	61	2015	27	-9	1962
14	63	1948	28	-9	1963
15	64	1971*	27	-13	1989
16	59	2021*	25	-12	1989
17	57	2002	25	-12	1964
18	60	1957	23	-11	1964
19	56	2002	25	-16	1983
20	58	1949	26	-10	1983
21	63	1967	26	-19	1989
22	55	1982	26	-24	1989
23	58	1982	28	-22	1989
24	59	1982	25	-22	1983
25	63	1982	23	-21	1983
26	59	2016	25	-16	1983
27	63	2008	28	-5	2017
28	60	1982	27	-18	1961
29	59	2019*	27	-8	1983
30	60	1992	26	-9	1983
31	60	1992	26	-16	1976

Earliest/Latest
60
	Earliest 1st	January 1st 2005
	Average 1st	March 16th
	Latest 1st	May 12th 1980

	Earliest Last	October 4th 1953
	Average Last	November 16th
	Latest Last	December 31st 1992

65
	Earliest 1st	March 8th 1974
	Average 1st	April 23rd
	Latest 1st	May 26th 1952

	Earliest Last	September 18th 1952
	Average Last	October 19th
	Latest Last	December 11th 1949

70
	Earliest 1st	April 18th 2002
	Average 1st	May 25th
	Latest 1st	June 29th 1955

	Earliest Last	August 27th 1987
	Average Last	September 24th
	Latest Last	October 29th 2004

75
	Earliest 1st	May 8th 2000
	Average 1st	June 27th
	Latest 1st	September 1st 2013

	Earliest Last	June 25th 1950
	Average Last	August 26th
	Latest Last	September 25th 1984

All Time Extremes:
Highest		Lowest
83F		-30F
July 14th 1995 August 31st 1997 August 4th 2004		January 20th 1985

Period of Record:
1946 to 2023

January
February
March
April
May
June
July
August
September
October
November
December
Miscellaneous

January Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	58	2005	21	-22	1974
2	59	1950	23	-17	1979
3	59	2023*	23	-10	1979
4	60	1955	21	-17	1959
5	59	1955	21	-19	1959
6	53	2008	22	-8	2004*
7	57	1965	20	-17	1968
8	59	2008	21	-16	1976
9	49	1948	20	-15	1962
10	58	2020	21	-31	1982
11	57	2020	22	-23	1982
12	60	1960	22	-21	1974
13	56	2005	21	-14	1954
14	56	1952	22	-19	1979
15	61	1949	22	-20	1979
16	57	1952	20	-25	1982
17	57	1952	21	-20	1982
18	57	1996	21	-17	1994*
19	52	1952	21	-16	1985
20	55	1954	21	-28	1985
21	54	2018*	21	-16	1984
22	58	2018	23	-8	1959
23	54	2002*	23	-25	1963
24	58	1950	21	-21	1963
25	55	1950	21	-10	1961
26	52	1954	21	-14	1978
27	56	1968	20	-22	1963
28	60	2013	21	-19	1966
29	59	2013	22	-26	1966
30	52	2013	19	-22	2019
31	53	1988*	21	-16	1965

February Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	55	1968	23	-20	1951
2	57	1986	21	-15	1996*
3	52	2019	22	-24	1996
4	57	2008*	21	-15	1996
5	57	1946	22	-20	1979
6	56	2017	23	-17	1982
7	59	2017	23	-20	1947
8	57	2001	22	-10	1981
9	59	2001*	22	-20	1979
10	59	1999	23	-16	1982
11	60	1999	22	-25	1981
12	55	2017	22	-19	1981
13	52	2005	24	-7	2021
14	52	2018*	26	-12	2021
15	58	2018*	24	-11	2021
16	58	1954	24	-16	1958
17	57	1961	24	-16	1958
18	57	1961	26	-12	2006*
19	61	2018	26	-7	2006
20	63	2018	28	-6	2008
21	61	2017*	28	-11	1968*
22	63	1985	26	-10	1963
23	58	1985	27	-5	2015
24	59	1956	27	-9	1967
25	57	2000	25	-7	1965
26	60	1996	26	-6	1967*
27	60	2011*	27	-4	2015
28	60	2017	27	-10	1962
29	58	2012	26	0	1960

March Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	59	2017	28	-10	1962
2	58	1976	27	-6	1980
3	57	1992*	27	-3	2019
4	62	1976	28	-9	2019
5	61	2004	29	-15	1960
6	60	2022	29	-8	1960
7	59	2017*	29	1	1996*
8	60	2016	29	-7	1996
9	61	2016*	31	-4	2003
10	62	1990	31	1	2003
11	62	1990	31	-8	1948
12	63	2006	33	-16	1948
13	62	1990	33	-3	1993
14	62	1990	33	0	1993
15	62	2012	32	3	2017
16	63	2012	32	6	1999
17	61	2012	33	3	1993
18	62	2012	34	2	1965
19	62	2020*	34	-3	1965
20	64	2004	34	5	1965
21	61	1948	32	1	2002
22	61	2023*	33	2	2002
23	63	2007	35	1	1974
24	60	1954*	35	-4	1974
25	62	1954	35	5	1974
26	64	2007	36	-8	1955
27	64	2020	37	8	1955
28	66	2020	38	11	2001
29	62	2007	38	4	1964
30	64	1949	39	6	1964
31	62	1963	38	10	1964*

April Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	63	2012	36	9	1961
2	65	1946	38	6	1952
3	65	1999	40	10	1952
4	66	2023	36	6	1995
5	66	2001	37	11	1995
6	66	2001	37	8	1979
7	66	1986	39	7	2007*
8	67	2015	39	9	2007*
9	65	2015	37	10	2007
10	68	2001	39	14	1989
11	64	2001	40	16	1957
12	64	2022*	38	10	1957
13	66	1981	39	10	1957*
14	65	2012	41	12	2020
15	65	2002	41	13	2020
16	66	1960	41	7	1961
17	69	2013	42	14	1956
18	66	2002	45	10	1956
19	69	2002*	45	8	1956
20	68	2002*	44	12	1956
21	66	2005	44	17	2018
22	66	2011	46	15	1956
23	67	1955	46	11	1956
24	66	2008*	46	19	1968
25	66	2007*	47	20	2002
26	69	1989	46	24	1946
27	69	1989	46	25	1988*
28	67	2021	46	21	2008
29	66	2021*	47	14	1958
30	67	2017*	49	21	1958

May Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	69	1983	48	21	1978*
2	68	2012	47	18	1961
3	70	2012	47	19	1954
4	73	2012	48	19	1957
5	73	2012	50	24	1954
6	73	2012	50	22	1992
7	71	2012*	51	22	1992*
8	72	2000	51	20	1945
9	72	2003	51	24	1966
10	74	2022	51	20	1966
11	73	2022	51	24	1981
12	73	2000	51	25	2021
13	75	1991	52	27	2013
14	72	1991	52	30	2016*
15	73	1991	53	21	1997
16	73	1995	54	24	1997
17	74	1995	54	28	1973
18	73	1987	54	32	1973*
19	74	2004	55	26	1967
20	75	2004	55	24	1954
21	74	2004*	55	30	2001
22	73	1959	55	26	1963
23	74	2004	57	28	1998
24	75	1989	57	35	1963*
25	75	1978	58	31	1988
26	74	1978*	58	30	1961
27	73	1991*	58	26	1994
28	75	1991	58	31	1965
29	74	1998*	58	29	1947
30	77	1998	59	30	1961
31	75	1998	59	33	1966

June Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	73	2002*	59	35	1966
2	74	1991	58	37	1969
3	73	2011*	58	34	1969
4	74	2008*	59	38	1988*
5	73	2019*	60	37	1946
6	74	2020*	61	41	2000
7	77	1995	61	43	1983
8	74	1999*	62	40	1948
9	76	2020*	62	37	1988
10	76	2020*	62	35	1988
11	77	1953	63	36	1988
12	78	2022	63	43	2023
13	78	2022	63	39	2019
14	79	2017	63	37	1959
15	76	1957	63	43	1961
16	78	1953	63	43	1961
17	78	2009	63	44	1961
18	77	2009*	63	42	1965
19	76	1990*	64	44	1965
20	77	2015*	64	38	1980
21	76	2015*	64	38	1963
22	77	1996	65	36	1963
23	77	2010*	64	42	1961
24	78	1978	64	40	1974*
25	80	2021	65	42	1961
26	78	1978	64	45	1950
27	77	1998*	65	39	1988
28	78	1998*	65	44	1968
29	78	1998	65	46	2009
30	79	1993	65	45	1980

July Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	78	1993*	65	48	1959
2	78	1999*	65	46	1967*
3	79	1982*	65	46	1959
4	80	1982	66	44	1967
5	80	1982	66	44	1979
6	79	1999	67	50	2006*
7	80	1998	67	51	1967*
8	79	2000	66	37	1954
9	78	2001*	66	42	1954
10	80	2011	67	46	1953*
11	80	2011	66	45	1959
12	82	2011	66	40	1959
13	81	1995	66	41	1975
14	82	1995	66	45	1975
15	79	1995*	67	45	1967
16	78	2022*	66	47	1954
17	81	2001	67	46	1954
18	82	2001	68	51	2009*
19	82	2001	68	51	1979*
20	80	2010*	68	51	1966
21	80	2004*	68	40	1947
22	78	2016*	67	37	1947
23	81	2001	66	44	1947
24	81	2001	66	48	2004
25	79	2016	66	50	1980*
26	81	2015	67	39	1962
27	81	2015	67	41	1954
28	80	1957	67	46	2013*
29	80	1957	67	46	1965
30	80	1986	66	46	1974
31	79	2001*	66	44	1952

August Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	79	2001	65	47	1952
2	80	2010*	65	45	1976
3	81	2008	67	47	1974
4	82	2008	66	47	1974
5	81	2008	65	48	2012*
6	78	2011*	66	42	2012
7	80	1995	65	42	1975
8	81	1995	66	39	1964
9	81	2010	65	42	1964
10	81	2010	66	48	1964
11	80	1997	64	44	1964
12	79	2016*	64	40	1964
13	79	1995	65	41	1964
14	78	2010	65	45	1964
15	80	1995	65	46	1992
16	80	1993	65	47	1992*
17	78	2000*	66	35	2012
18	78	1993	65	35	2012
19	81	1995	65	40	2012
20	82	2023	64	39	1950
21	82	2023	64	41	2012
22	81	2023	64	41	2012
23	81	2023*	64	43	1966*
24	80	2023*	64	44	2012
25	79	2023*	64	42	1962
26	79	2023	65	44	1953
27	78	2000	65	37	1967
28	81	2000	64	37	1986*
29	80	2000	63	38	1976
30	80	2000	64	41	1976*
31	78	2000*	64	39	1967

September Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	79	2000	63	39	1956
2	79	2000	62	39	1952
3	78	2000	62	40	1957
4	77	2000	61	39	1974
5	75	2012	60	36	1976
6	76	2016*	60	31	1988
7	76	1998*	61	31	1956
8	75	2016*	61	33	1956
9	74	2019*	60	30	1976
10	77	1984	59	30	1976
11	73	2019*	59	30	1955
12	75	1984	59	29	1955
13	76	2008	57	35	1975*
14	73	1998*	57	35	2007
15	74	1991	56	29	1947
16	74	1978	57	32	1947
17	74	1978	58	32	1956
18	73	1988*	58	35	1991
19	76	2018	58	30	1991
20	76	2016	58	30	1962
21	76	2016	56	28	1983
22	74	2005*	55	28	1995*
23	73	2005*	53	22	1989
24	74	1984	53	29	1989
25	74	1998	54	30	2000
26	73	1998	53	29	1984
27	72	1998	52	27	1951
28	72	1986	52	28	1967
29	74	1955	50	22	1953
30	71	2021*	50	24	1953

October Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	70	2019*	50	21	1958
2	74	1954	50	23	1958
3	72	2017*	50	23	1987
4	72	2017*	51	22	1987
5	71	2017*	50	13	1952
6	73	1955	49	12	1952
7	70	2018	47	13	1956
8	70	1982	48	19	1956
9	71	1949	49	18	1956
10	70	1949	47	16	1958
11	71	1962	46	22	2000*
12	70	1962	48	18	2006
13	68	1969	46	16	2006
14	70	1962	46	16	2006
15	68	1968	47	18	2006
16	69	1962	45	21	2020
17	68	2016	45	11	2022
18	69	1985	43	12	2022
19	66	1984	42	11	2022
20	68	1949	42	11	2022
21	66	1949	44	8	1952
22	67	2017*	45	3	1952
23	67	2015*	44	8	1952
24	66	2021*	42	18	1981
25	65	2023	41	15	1962
26	67	2004	42	12	2008
27	67	2023	41	9	1952
28	70	2004	40	7	1952
29	68	2004	40	6	1952
30	66	2013*	42	10	1952
31	66	1984*	43	15	1952

November Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	67	1982*	42	10	1954*
2	66	2016	40	-3	1966
3	66	2016*	38	0	1991
4	63	2003	38	4	1991
5	64	2017	38	6	1952
6	66	1999	37	8	1952
7	64	1999	36	1	1991
8	65	1999	36	-4	1991
9	62	2020*	35	1	1991
10	63	2006*	34	10	2018
11	61	2003*	34	3	1950
12	62	1985	34	2	2019
13	64	1985	33	1	1986
14	64	1985	35	6	1986
15	65	1988	37	14	2019*
16	64	1964*	35	4	1955
17	66	1958	35	-9	1959
18	63	1985	34	0	1959
19	60	1982*	35	8	2022
20	61	1977	33	2	1964
21	62	1980	33	-5	1964
22	61	2010	32	4	1964
23	59	1999*	32	-2	1950
24	60	1973	31	-8	1950
25	58	1966	31	-1	1950
26	62	1990	32	0	1977
27	64	1990	31	3	1955
28	60	1998	28	-3	1955
29	61	2006	28	1	1976
30	59	1998*	28	-4	1964

December Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	61	1982	28	-1	1946
2	63	1982	30	-1	1985
3	63	1982	30	2	1989
4	60	2017	30	-1	2006
5	61	1998	28	-1	1995
6	60	1966	26	-2	1977
7	60	1966	26	-7	1950
8	61	1966	26	-5	1962
9	58	1946	25	-10	1958
10	59	2021	24	-8	1977
11	63	1949	26	-9	1962
12	60	2015	25	-13	1962
13	62	2015	26	-9	2010
14	62	2015	26	-13	1963
15	63	1948	24	-20	1945
16	56	1984	23	-15	1989
17	53	2006*	24	-15	2000*
18	57	1957	23	-13	1981
19	53	1978	24	-20	1983
20	62	1949	25	-18	1983
21	60	1967	25	-20	1989
22	55	1979	24	-27	1989
23	57	1982	24	-25	1989
24	57	1982	23	-28	1983
25	57	2016*	22	-25	1983
26	60	2016	23	-14	1983
27	61	2008	26	-7	2017
28	59	1984	25	-14	1961
29	61	1984	26	-16	1983
30	62	1992	24	-19	1983
31	58	1965	24	-18	1976

Earliest/Latest
60
	Earliest 1st	January 4th 1959
	Average 1st	March 24th
	Latest 1st	May 10th 1980,1953

	Earliest Last	October 5th 1976, 1951
	Average Last	November 10th
	Latest Last	December 30th 1992

65
	Earliest 1st	March 28th 2020
	Average 1st	April 30th
	Latest 1st	June 8th 1988

	Earliest Last	September 16th 1987,1956
	Average Last	October 11th
	Latest Last	November 17th 1958

70
	Earliest 1st	May 3rd 2012
	Average 1st	May 25th
	Latest 1st	June 24th 1988

	Earliest Last	August 12th 1976,1953
	Average Last	September 18th
	Latest Last	October 28th 2004

75
	Earliest 1st	May 13th 1991
	Average 1st	June 24th
	Latest 1st	August 31st 2012

	Earliest Last	May 30th 1974
	Average Last	August 16th
	Latest Last	September 21st 2016

All Time Extremes:
Highest		Lowest
82F		-31F
August 21st 2023 August 20th 2023 July 14th 1995 July 18th 2001 July 19th 2001 August 4th 2008 July 12th 2011		January 10h 1982

Period of Record:
1945 to 2023
Missing most/all of 1970-1972 and 2014

January
February
March
April
May
June
July
August
September
October
November
December
Miscellaneous

January Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	54	2004	18	-22	1974
2	59	2004	20	-21	1979
3	57	2023	22	-16	1979
4	59	1997	20	-15	1999
5	54	1998	19	-24	1999
6	53	2008	19	-24	2014
7	56	2008	17	-20	1977
8	55	2008	18	-18	1979*
9	46	2020	17	-20	1999
10	56	1975	19	-33	1982
11	53	2018	21	-25	1982
12	57	2005	19	-26	1974
13	54	2005	17	-12	1982*
14	42	1987	18	-19	1979
15	45	1980	19	-25	1979
16	57	1990	19	-32	1977
17	55	1990	20	-28	1977
18	54	1996	20	-20	1994
19	45	2017	19	-20	1985
20	48	2017	18	-33	1985
21	52	2018	19	-20	1984
22	54	2018	22	-15	1977
23	53	2002	22	-14	2003*
24	45	2010	20	-15	1987
25	42	2016*	19	-11	1987*
26	41	1989	18	-14	1978
27	46	1999	19	-15	1986
28	58	2013	19	-26	1977
29	57	2013	21	-23	1977
30	52	2013	19	-25	2019
31	50	2012*	19	-27	1996

February Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	50	2012	22	-18	1979
2	50	2016	19	-26	1996
3	48	2020	19	-30	1996
4	57	2008	18	-25	1996
5	49	2008	18	-20	1979
6	49	2017	19	-25	1978
7	56	2017	20	-15	2021
8	57	2001	19	-11	2011
9	57	2001	18	-24	1979*
10	54	1999	20	-17	1982
11	57	1999	20	-24	1981
12	52	1984	20	-20	1981
13	50	2005	21	-9	2021*
14	52	2005	24	-14	2021
15	57	2018	22	-11	2021
16	54	1976	21	-12	2021*
17	56	2011	24	-10	1979
18	53	2011	24	-16	1983
19	59	2018	25	-12	2015
20	59	2018	29	-6	2008
21	60	2017	28	0	2008*
22	57	2017	28	-4	1978
23	56	1985	27	-10	2015
24	55	2017	26	-9	2015
25	55	2000	24	-5	2003
26	60	1996	25	-11	2014
27	58	1996	25	-12	2015*
28	59	2017	25	-4	2015
29	55	2012	28	-1	1996*

March Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	57	1976	28	0	1980
2	59	1976	26	-11	2014
3	57	1992*	25	-17	2014
4	61	1976	27	-14	1978
5	61	2004	28	-12	1978
6	57	2017*	28	-1	2015
7	66	1974	29	0	1996
8	58	1974	30	-6	1996
9	61	1990*	31	-6	2003
10	64	1990	30	-2	2003
11	63	2006	30	1	1998*
12	62	1990	32	-2	2022*
13	63	2006*	32	4	1993
14	62	1990*	32	1	1993
15	62	2012	32	3	2017
16	60	2012	31	5	2017
17	61	2012	32	4	1993
18	61	2012	33	5	2023
19	63	2012	33	8	1981
20	60	2012	34	6	2013
21	58	2011*	31	2	2002
22	59	2007	31	1	2002
23	63	2007	33	-2	1974
24	61	2007	34	-6	1974
25	61	2007*	34	4	1974
26	63	2007	35	5	1996
27	61	2007*	36	7	2001
28	63	2020*	39	9	2001
29	61	2007*	38	15	2020*
30	61	2007	38	14	1991*
31	64	2023	38	11	2021

April Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	63	2012	34	12	2021
2	63	2006*	37	7	2018
3	64	1999	39	12	1987*
4	66	2023	35	2	1995
5	65	2010*	35	3	1995
6	68	2001	36	6	2018
7	65	2001	38	6	2007*
8	63	2015	39	10	2016*
9	66	2015*	36	10	2016*
10	66	2001*	38	14	1997
11	67	1981	39	17	2012*
12	65	1981	38	16	2016
13	70	1981	39	15	2020
14	70	1981	41	14	2020
15	68	2002	41	17	2020*
16	66	2002	41	19	2018*
17	68	2002	41	20	1990
18	69	2002	44	14	1988
19	64	2017*	44	12	1988
20	65	1977	44	15	2018*
21	68	1973	43	18	2015
22	66	2001	44	12	1986
23	66	1990	43	12	1986
24	65	1990	45	20	2023*
25	66	1990	46	25	2000
26	65	1990*	45	25	2006*
27	69	1989	44	20	2012*
28	68	1989	44	23	2012*
29	65	2021*	45	20	2018*
30	68	1986	48	19	2018

May Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	67	1986	47	17	1978
2	70	2018	46	16	2023
3	70	2012	45	16	2023
4	69	2012	46	19	2005
5	72	2012	48	22	2005
6	71	2012	49	18	1992*
7	71	2023	50	18	1992
8	70	2000	51	23	2020*
9	70	2003	51	23	2020
10	74	2022	50	28	2020
11	74	2022	52	24	1989
12	73	2022	51	25	1997
13	72	2023	50	24	2021
14	70	2023*	50	28	2016*
15	73	1998	51	21	1997
16	73	2001*	52	25	1997
17	72	2001	52	26	2014*
18	71	2001	52	29	2014
19	73	1998*	53	29	2006
20	76	1987	54	31	1993
21	74	1987	53	33	2008*
22	73	1987	53	27	1997
23	73	2010	55	28	1997
24	72	2019*	55	32	1992
25	72	2008	56	29	1992
26	71	2010*	57	23	1989
27	72	1987	57	28	1992
28	73	1991	58	27	1992
29	73	2011	57	30	1992
30	73	2004*	59	32	1992
31	74	2002	57	35	1992

June Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	75	1980	57	32	1979
2	75	2002	57	34	1979
3	74	2020	56	33	1977
4	74	2005*	58	39	1988
5	76	1980	58	40	1988
6	77	1980	58	38	1983
7	76	1980	59	37	1983
8	76	1981	59	31	2023
9	74	2020*	60	39	2023
10	76	1986	59	32	1987
11	76	2004	62	41	2019
12	76	2010	62	35	2012
13	79	2022	61	39	2019
14	76	1990	61	41	2019*
15	75	2015	62	44	2020
16	77	1990	62	39	1999
17	78	1990	62	39	1999
18	77	1990	62	39	1999
19	76	1974	62	43	1976
20	77	1974	63	40	2003
21	77	2010	64	41	1976
22	78	2010	64	40	2021
23	78	2009	63	43	1976
24	77	2003	63	40	2017
25	76	2009*	63	41	1979
26	77	1989	64	45	2017*
27	78	2009*	64	39	1987
28	79	1998	64	42	1992
29	79	1998	63	44	1989
30	77	2014*	63	47	1988

July Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	78	2011	63	45	1995*
2	78	1980	63	42	2001
3	77	2003*	65	47	1988
4	80	1982*	66	48	2008*
5	80	1980	65	45	1979
6	77	2022*	66	47	2006
7	79	2001*	66	45	1983
8	79	2001*	66	51	1988*
9	79	2000*	66	48	1996
10	79	2000*	66	46	1996
11	80	1980	66	43	1999
12	80	1980	66	39	1975
13	80	2015	66	40	1975
14	80	2010	66	44	1975
15	79	2010	66	49	2014
16	78	1982	66	47	1976
17	81	2001	66	46	1976
18	80	1982	67	48	1976
19	80	1982	68	49	1984
20	80	1982	68	50	2009
21	79	2001*	68	50	2007
22	79	2016	67	52	2000*
23	83	2005	65	50	1985
24	81	2005	65	47	1991
25	83	1992	66	48	1991*
26	77	2014*	66	44	2004
27	79	2023	66	45	1977
28	80	2015	66	46	2013
29	80	2021*	65	49	2013*
30	79	2001	65	50	1997
31	79	2001	65	46	1997

August Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	78	2002*	64	45	1992
2	78	2002*	64	48	1992*
3	79	2004*	66	43	1976
4	80	2016*	65	45	1976
5	80	2016*	65	43	1994
6	79	2022*	64	44	2012
7	78	2022*	65	40	1989
8	79	2007*	65	44	1989
9	81	2010	66	46	1989
10	82	2010	65	51	2012*
11	79	2016	64	45	2012*
12	80	1985	64	45	1979
13	80	2019	65	47	2004
14	77	1987	64	44	1994
15	78	1987	64	44	1994
16	78	1983	65	48	1992
17	78	1993	65	40	2012
18	78	1993	65	38	2012
19	79	2005*	65	41	2012
20	81	2023	64	45	2012
21	80	2023	64	37	2012
22	80	2023	64	41	2012
23	81	2023	64	46	2012*
24	79	2023	64	45	2015
25	78	2023	64	41	2015
26	80	2023	66	46	1988
27	79	1990*	66	49	2011*
28	78	1990	65	38	1986
29	79	2000	63	41	1986*
30	79	2000	63	43	1992
31	77	2000	63	44	1984

September Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	78	1985	63	44	1987*
2	80	1985	63	41	1994
3	75	1990*	61	38	1974
4	75	1990*	60	36	1974
5	73	2023*	59	38	1988
6	78	1980	60	38	1988
7	78	1980	60	34	2011
8	79	1980	60	38	1986
9	77	1980	60	34	1976
10	74	2019*	59	24	1976
11	72	2019*	58	35	1976
12	77	1984	58	30	1975
13	75	2005	57	33	2014*
14	74	2004	56	34	2007
15	73	2004	55	21	2011
16	74	2019	56	32	2011*
17	74	2019*	56	37	1999
18	73	1978	57	34	1991
19	74	1978	57	26	1991
20	73	1978	56	28	1991
21	73	2016*	54	26	1983
22	73	1986*	53	23	1995
23	71	1986	51	21	1989
24	73	1986	51	27	1989
25	73	1998	53	30	1975
26	72	1998*	52	26	1991
27	70	1986*	51	29	1991
28	71	1986	51	32	2006
29	72	2019	50	28	1984
30	70	2019	50	24	2003

October Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	70	2019	50	21	1974
2	71	2019	49	20	1974
3	71	2019*	49	20	1974
4	69	2018*	47	24	1988
5	69	2017*	48	27	2004*
6	70	1982	48	22	2000
7	68	2007	46	21	2000
8	70	1973	47	21	2000
9	70	1982	47	22	2000*
10	68	1973	45	23	1979
11	67	1973	45	18	1987
12	67	1985	46	16	2006
13	66	1985	44	19	2006
14	66	2021*	44	13	2006
15	67	2017	44	15	2020*
16	67	2016	42	18	2015
17	68	2016	43	15	2022
18	68	1985	41	17	2022*
19	67	1985	40	10	2022
20	66	1979	41	14	2022
21	65	1979	42	17	1976
22	67	2012	43	17	1976
23	66	2004	43	13	1981
24	65	2012*	42	11	1981
25	64	2023	41	19	2001
26	65	2023	41	8	2008
27	65	2023	40	15	2008
28	66	2004	39	17	1988
29	69	2004	39	16	1988
30	66	2009*	41	11	1988
31	66	2000	42	12	1988

November Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	65	1984*	41	12	2020*
2	67	2016	39	10	1999
3	64	2003	38	6	1991
4	63	2003	38	7	1991
5	63	2022	37	10	1995
6	63	1975	37	10	1993
7	59	2000	35	3	1991*
8	63	2005	36	-3	1991
9	62	1984	36	-1	1991
10	61	2020	34	8	2017
11	59	2003*	33	7	2019*
12	59	2015	31	-1	2019
13	62	1978	31	-4	1986
14	61	1989	33	4	1986
15	63	1988	34	9	2014
16	60	2001*	33	9	2005*
17	62	2013	34	0	2014
18	62	1985	35	1	2014
19	59	1991	34	6	2014
20	59	1982	33	6	1987
21	59	1979	31	4	2000
22	62	1983	31	9	2008
23	58	2003*	33	6	2013
24	57	2001	30	-1	2005
25	52	2006	30	-2	2005
26	60	1990	32	-7	1977
27	61	1990	31	3	1977
28	59	1997*	28	-1	1976
29	59	1998	29	-3	1976
30	57	1998	29	2	1976

December Dew Points
Years marked with a * are the latest of multiple occurrences
Day	Highest Value	Year	Average	Lowest Value	Year
1	58	1982	26	0	2002
2	63	1982	28	-2	1985
3	61	1982	28	-2	1976
4	59	1998	28	-2	1991
5	58	2017*	27	-2	1995
6	58	1980	25	-9	1977
7	58	1980	25	-14	1976
8	59	1991	24	-7	1976
9	52	2023	24	-14	1977
10	58	2021	22	-21	1995
11	59	2021	25	-11	1995*
12	60	2015	25	-10	1989
13	61	2015	27	-8	2010
14	60	2015	28	-11	1989
15	61	2021	25	-20	1989
16	58	2021	23	-14	1989
17	52	2006	21	-10	2000
18	55	2002	20	-18	1983
19	51	2002	22	-24	1983
20	48	2013	23	-18	1983
21	54	2015	23	-25	1989
22	53	1979	24	-30	1989
23	56	1982	24	-27	1989
24	55	1982	22	-27	1983
25	55	1982	19	-24	1983
26	59	2016	21	-17	1983
27	58	2008	25	-11	2017
28	60	1984	25	-7	2017
29	60	1984	24	-14	1983
30	58	1992	23	-17	1976
31	55	2010	23	-29	1976

Earliest/Latest
60
	Earliest 1st	February 21st 2017
	Average 1st	April 4th
	Latest 1st	May 11th 1980

	Earliest Last	September 22nd 1992
	Average Last	November 1st
	Latest Last	December 29th 1984

65
	Earliest 1st	March 7th 1974
	Average 1st	May 4th
	Latest 1st	June 8th 1988

	Earliest Last	September 4th 2011
	Average Last	October 5th
	Latest Last	November 2nd 2016

70
	Earliest 1st	April 13th 1981
	Average 1st	May 27th
	Latest 1st	August 5th 1976

	Earliest Last	August 11th 1992
	Average Last	September 15th
	Latest Last	October 9th 1982

75
	Earliest 1st	May 20th 1987
	Average 1st	June 28th
	Latest 1st	August 6th 2007

	Earliest Last	July 16th 2018
	Average Last	August 20th
	Latest Last	September 13th 2005

All Time Extremes:

Highest

Lowest

83F

-33F

July 23rd 2005

July 25th 1992

January 10th 1982

January 20th 1985

Period of Record:
Extremes 1973 to 2023