Patuxent River NAS Threshold Days by Year

17 fixed thresholds counted per year at Patuxent River NAS (USW00013721): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Patuxent River NAS Thresholds

Patuxent River NAS: days with 10 mm (0.39 in) or more of precipitation in 77 years, most in 2003 with 53.
Patuxent River NAS: days with 25 mm (0.98 in) or more of precipitation in 77 years, most in 1979 with 21.
Patuxent River NAS: days with a maximum temperature at or above 30 C (86 F) in 76 years, most in 2018 with 92.
Patuxent River NAS: days with a maximum temperature at or above 90 F (32.2 C) in 76 years, most in 2010 with 53.
17 fixed thresholds have at least one qualifying day at Patuxent River NAS.

Days at or above 30 C (86 F)

76 years with a qualifying day

Days per year at Patuxent River NAS with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2018.

Days at or above 30 C (86 F) per year at Patuxent River NAS
Year	Days	Decade average
1946	27	36
1947	40	36
1948	38	36
1949	39	36
1950	31	48.3
1951	42	48.3
1952	59	48.3
1953	57	48.3
1954	56	48.3
1955	47	48.3
1956	49	48.3
1957	45	48.3
1958	38	48.3
1959	59	48.3
1960	27	41.1
1961	36	41.1
1962	22	41.1
1963	40	41.1
1964	47	41.1
1965	50	41.1
1966	58	41.1
1967	31	41.1
1968	50	41.1
1969	50	41.1
1970	63	39.2
1971	36	39.2
1972	26	39.2
1973	42	39.2
1974	34	39.2
1975	43	39.2
1976	27	39.2
1977	43	39.2
1978	50	39.2
1979	28	39.2
1980	72	59.3
1981	51	59.3
1982	47	59.3
1983	73	59.3
1984	54	59.3
1985	66	59.3
1986	67	59.3
1987	59	59.3
1988	58	59.3
1989	46	59.3
1990	53	51.7
1991	68	51.7
1992	26	51.7
1993	65	51.7
1994	57	51.7
1995	57	51.7
1996	40	51.7
1997	32	51.7
1998	67	51.7
2001	33	42.6
2002	56	42.6
2003	39	42.6
2004	24	42.6
2005	45	42.6
2007	62	42.6
2008	45	42.6
2009	37	42.6
2010	83	64.6
2011	65	64.6
2012	68	64.6
2013	54	64.6
2014	33	64.6
2015	51	64.6
2016	68	64.6
2017	52	64.6
2018	92	64.6
2019	80	64.6
2022	77	65.6
2023	66	65.6
2024	79	65.6
2025	53	65.6
2026	53	65.6

For each year, a bar from the first to the last day at Patuxent River NAS meeting 30 C (86 F).

First to last qualifying date each year at Patuxent River NAS
Year	First date	Last date
1946	1946-05-25	1946-09-10
1947	1947-05-13	1947-09-19
1948	1948-06-12	1948-09-20
1949	1949-05-07	1949-10-10
1950	1950-05-06	1950-09-03
1951	1951-04-29	1951-10-06
1952	1952-04-23	1952-10-02
1953	1953-04-25	1953-09-15
1954	1954-04-08	1954-10-13
1955	1955-05-24	1955-08-22
1956	1956-05-13	1956-09-17
1957	1957-05-15	1957-09-21
1958	1958-06-09	1958-09-26
1959	1959-04-09	1959-10-06
1960	1960-04-14	1960-09-09
1961	1961-05-08	1961-09-25
1962	1962-05-15	1962-09-14
1963	1963-05-08	1963-09-20
1964	1964-04-17	1964-09-11
1965	1965-05-04	1965-09-21
1966	1966-05-06	1966-09-06
1967	1967-04-03	1967-08-27
1968	1968-05-03	1968-10-03
1969	1969-04-27	1969-09-17
1970	1970-05-09	1970-09-26
1971	1971-06-03	1971-09-11
1972	1972-04-19	1972-09-26
1973	1973-04-22	1973-09-29
1974	1974-04-29	1974-09-21
1975	1975-05-27	1975-10-15
1976	1976-04-17	1976-09-13
1977	1977-05-05	1977-09-19
1978	1978-04-01	1978-09-21
1979	1979-06-23	1979-09-14
1980	1980-05-05	1980-09-23
1981	1981-05-25	1981-10-01
1982	1982-05-17	1982-09-18
1983	1983-04-28	1983-09-20
1984	1984-05-08	1984-09-26
1985	1985-03-29	1985-10-15
1986	1986-05-01	1986-10-04
1987	1987-05-12	1987-09-17
1988	1988-05-23	1988-09-23
1989	1989-03-28	1989-09-21
1990	1990-03-12	1990-10-08
1991	1991-04-07	1991-09-19
1992	1992-05-02	1992-09-22
1993	1993-05-11	1993-09-26
1994	1994-04-27	1994-09-17
1995	1995-04-09	1995-09-14
1996	1996-04-22	1996-09-10
1997	1997-05-19	1997-10-10
1998	1998-03-29	1998-10-01
2001	2001-04-09	2001-09-10
2002	2002-05-31	2002-10-05
2003	2003-04-16	2003-09-02
2004	2004-04-19	2004-08-20
2005	2005-04-20	2005-09-23
2007	2007-04-30	2007-10-09
2008	2008-05-31	2008-10-16
2009	2009-04-26	2009-09-24
2010	2010-04-06	2010-09-25
2011	2011-04-20	2011-09-14
2012	2012-04-16	2012-09-08
2013	2013-04-10	2013-10-06
2014	2014-05-12	2014-09-11
2015	2015-05-12	2015-09-10
2016	2016-04-19	2016-09-18
2017	2017-04-16	2017-10-09
2018	2018-04-13	2018-10-11
2019	2019-05-02	2019-10-02
2022	2022-04-13	2022-09-25
2023	2023-04-13	2023-10-30
2024	2024-04-15	2024-10-31
2025	2025-04-19	2025-09-06
2026	2026-03-11	2026-10-01

Every Fixed Threshold

Fixed thresholds at Patuxent River NAS
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	76	92	2018	53
35 C (95 F): Days	62	21	2010	4
40 C (104 F): Days	3	1	2010	1
90 F (32.2 C): Days	76	53	2010	24
100 F (37.8 C): Days	20	8	2010	1
0 C (32 F): Ice days (max	72	23	1977	13
0 C (32 F): Frost days (min	76	95	1969	51
-10 C (14 F): Days with min	57	18	1977	4
20 C (68 F): Tropical nights (min	76	105	2018	68
25 C (77 F): Days with min	56	22	2024	3
10 mm (0.39 in): Days with 10 mm or more rain	77	53	2003	22
25 mm (0.98 in): Days with 25 mm or more rain	77	21	1979	9
50 mm (1.97 in): Days with 50 mm or more rain	72	6	1958	1
100 mm (3.94 in): Days with 100 mm or more rain	16	1	1955	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	2010	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	6	1962	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1954	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

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Data for Patuxent River NAS threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).

Patuxent River NAS Threshold Days by Year

Key Facts for Patuxent River NAS Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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