Britton Threshold Days by Year (USC00391049)

22 fixed thresholds counted per year at Britton (USC00391049): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Britton Thresholds

Britton: nights with a minimum temperature at or below 0 C (32 F) in 111 years, most in 2018 with 198.
Britton: nights with a minimum temperature at or below -10 C (14 F) in 111 years, most in 1955 with 119.
Britton: nights with a minimum temperature at or below -20 C (-4 F) in 111 years, most in 1936 with 59.
Britton: days with 10 mm (0.39 in) or more of precipitation in 111 years, most in 1916 with 30.
22 fixed thresholds have at least one qualifying day at Britton.

Days at or above 30 C (86 F)

110 years with a qualifying day

Days per year at Britton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1936.

Days at or above 30 C (86 F) per year at Britton
Year	Days	Decade average
1913	43	32.3
1914	31	32.3
1915	11	32.3
1916	32	32.3
1917	31	32.3
1918	28	32.3
1919	50	32.3
1920	36	36.7
1921	50	36.7
1922	45	36.7
1923	42	36.7
1924	33	36.7
1925	44	36.7
1926	42	36.7
1927	13	36.7
1928	20	36.7
1929	42	36.7
1930	43	58.8
1931	56	58.8
1932	48	58.8
1933	65	58.8
1934	72	58.8
1935	45	58.8
1936	81	58.8
1937	55	58.8
1938	59	58.8
1939	64	58.8
1940	55	39.8
1941	48	39.8
1942	19	39.8
1943	40	39.8
1944	34	39.8
1946	31	39.8
1947	44	39.8
1948	40	39.8
1949	47	39.8
1952	56	41.3
1953	33	41.3
1954	34	41.3
1955	47	41.3
1956	30	41.3
1957	27	41.3
1958	37	41.3
1959	66	41.3
1960	35	33.6
1961	41	33.6
1962	21	33.6
1963	29	33.6
1964	38	33.6
1965	18	33.6
1966	42	33.6
1967	33	33.6
1968	35	33.6
1969	44	33.6
1970	65	48.1
1971	36	48.1
1972	36	48.1
1973	49	48.1
1974	55	48.1
1975	46	48.1
1976	72	48.1
1977	42	48.1
1978	49	48.1
1979	31	48.1
1980	67	54.3
1981	42	54.3
1982	51	54.3
1983	70	54.3
1984	46	54.3
1985	45	54.3
1986	41	54.3
1987	55	54.3
1988	74	54.3
1989	52	54.3
1990	48	28.1
1991	43	28.1
1992	18	28.1
1993	11	28.1
1994	18	28.1
1995	34	28.1
1996	26	28.1
1997	26	28.1
1998	28	28.1
1999	29	28.1
2000	45	42.9
2001	53	42.9
2002	55	42.9
2003	46	42.9
2004	27	42.9
2005	43	42.9
2006	54	42.9
2007	52	42.9
2008	35	42.9
2009	19	42.9
2010	40	40
2011	42	40
2012	63	40
2013	46	40
2014	18	40
2015	42	40
2016	37	40
2018	42	40
2019	30	40
2020	37	39.6
2021	56	39.6
2022	35	39.6
2023	46	39.6
2024	28	39.6
2025	33	39.6
2026	42	39.6

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

First to last qualifying date each year at Britton
Year	First date	Last date
1913	1913-04-15	1913-09-09
1914	1914-05-24	1914-09-27
1915	1915-07-11	1915-09-05
1916	1916-05-07	1916-09-03
1917	1917-05-16	1917-09-23
1918	1918-05-04	1918-08-28
1919	1919-05-27	1919-09-18
1920	1920-06-08	1920-10-07
1921	1921-05-21	1921-09-03
1922	1922-06-04	1922-10-04
1923	1923-05-27	1923-09-05
1924	1924-04-24	1924-09-03
1925	1925-05-19	1925-09-17
1926	1926-04-20	1926-08-31
1927	1927-06-27	1927-09-13
1928	1928-05-08	1928-10-10
1929	1929-05-25	1929-09-22
1930	1930-05-21	1930-09-23
1931	1931-05-15	1931-09-13
1932	1932-05-13	1932-09-14
1933	1933-05-17	1933-09-29
1934	1934-04-28	1934-10-13
1935	1935-06-13	1935-09-24
1936	1936-05-05	1936-09-22
1937	1937-05-28	1937-10-03
1938	1938-06-05	1938-10-03
1939	1939-05-05	1939-09-21
1940	1940-05-12	1940-09-22
1941	1941-05-13	1941-09-21
1942	1942-07-07	1942-09-10
1943	1943-05-28	1943-09-27
1944	1944-05-15	1944-09-17
1946	1946-06-10	1946-09-05
1947	1947-07-03	1947-10-20
1948	1948-05-19	1948-09-17
1949	1949-05-29	1949-09-25
1952	1952-04-27	1952-09-29
1953	1953-05-29	1953-10-02
1954	1954-06-13	1954-09-01
1955	1955-05-01	1955-10-10
1956	1956-05-18	1956-10-12
1957	1957-07-01	1957-08-31
1958	1958-04-16	1958-10-15
1959	1959-05-01	1959-09-14
1960	1960-06-26	1960-09-20
1961	1961-05-31	1961-10-06
1962	1962-04-24	1962-10-14
1963	1963-05-07	1963-10-05
1964	1964-05-20	1964-09-09
1965	1965-04-29	1965-08-14
1966	1966-05-21	1966-08-31
1967	1967-05-22	1967-09-08
1968	1968-04-30	1968-09-14
1969	1969-05-14	1969-09-14
1970	1970-05-07	1970-10-06
1971	1971-06-17	1971-09-14
1972	1972-05-16	1972-09-20
1973	1973-06-01	1973-09-02
1974	1974-06-03	1974-09-27
1975	1975-05-18	1975-10-07
1976	1976-06-04	1976-10-01
1977	1977-04-09	1977-09-08
1978	1978-06-06	1978-09-12
1979	1979-05-28	1979-09-27
1980	1980-04-20	1980-10-07
1981	1981-05-03	1981-09-14
1982	1982-05-03	1982-09-11
1983	1983-06-10	1983-09-28
1984	1984-05-16	1984-09-20
1985	1985-04-18	1985-09-07
1986	1986-05-29	1986-08-20
1987	1987-04-19	1987-09-26
1988	1988-05-12	1988-08-31
1989	1989-06-06	1989-10-01
1990	1990-04-22	1990-10-05
1991	1991-05-12	1991-10-16
1992	1992-04-30	1992-10-02
1993	1993-06-21	1993-10-06
1994	1994-05-23	1994-09-10
1995	1995-06-14	1995-09-04
1996	1996-06-10	1996-09-06
1997	1997-05-18	1997-10-03
1998	1998-06-24	1998-09-19
1999	1999-06-04	1999-08-28
2000	2000-05-05	2000-09-19
2001	2001-05-14	2001-09-06
2002	2002-05-28	2002-09-17
2003	2003-04-13	2003-10-08
2004	2004-04-28	2004-09-19
2005	2005-05-20	2005-10-01
2006	2006-05-23	2006-09-14
2007	2007-05-13	2007-10-06
2008	2008-06-24	2008-09-01
2009	2009-04-23	2009-08-14
2010	2010-05-24	2010-08-31
2011	2011-06-05	2011-09-09
2012	2012-05-14	2012-09-15
2013	2013-05-13	2013-09-22
2014	2014-05-24	2014-09-26
2015	2015-05-02	2015-10-11
2016	2016-05-05	2016-08-29
2018	2018-05-08	2018-09-17
2019	2019-05-31	2019-09-21
2020	2020-06-02	2020-08-26
2021	2021-05-25	2021-09-30
2022	2022-06-13	2022-09-20
2023	2023-05-23	2023-10-03
2024	2024-05-18	2024-09-30
2025	2025-05-11	2025-10-04
2026	2026-04-23	2026-10-11

Every Fixed Threshold

Fixed thresholds at Britton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	110	81	1936	42
35 C (95 F): Days	96	40	1936	2
40 C (104 F): Days	27	12	1936	3
45 C (113 F): Days	2	1	1936	1
90 F (32.2 C): Days	109	59	1936	22
100 F (37.8 C): Days	56	27	1936	1
110 F (43.3 C): Days	4	3	1936	1
0 C (32 F): Ice days (max	110	120	2019	50
0 C (32 F): Frost days (min	111	198	2018	116
-10 C (14 F): Days with min	111	119	1955	43
-20 C (-4 F): Days with min	111	59	1936	13
-30 C (-22 F): Days with min	102	29	1936	10
-40 C (-40 F): Days with min	5	2	1916	1
20 C (68 F): Tropical nights (min	109	27	1983	9
25 C (77 F): Days with min	38	9	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	111	30	1916	11
25 mm (0.98 in): Days with 25 mm or more rain	108	11	1916	3
50 mm (1.97 in): Days with 50 mm or more rain	56	5	1999	2
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1942	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	10	1996	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1993	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1997	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

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Data for Britton 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Britton Threshold Days by Year (USC00391049)

Key Facts for Britton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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