Brownsville Threshold Days by Year (USC00401145)

18 fixed thresholds counted per year at Brownsville (USC00401145): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Brownsville Thresholds

Brownsville: nights with a minimum temperature at or below 0 C (32 F) in 115 years, most in 1979 with 95.
Brownsville: nights with a minimum temperature at or above 20 C (68 F) in 115 years, most in 2018 with 113.
Brownsville: days with 10 mm (0.39 in) or more of precipitation in 114 years, most in 1974 with 65.
Brownsville: days with 25 mm (0.98 in) or more of precipitation in 114 years, most in 1990 with 27.
18 fixed thresholds have at least one qualifying day at Brownsville.

Days at or above 30 C (86 F)

110 years with a qualifying day

Days per year at Brownsville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 138 in 1925.

Days at or above 30 C (86 F) per year at Brownsville
Year	Days	Decade average
1908	93	87
1909	81	87
1911	102	97
1915	87	97
1918	93	97
1919	106	97
1920	97	105.8
1921	119	105.8
1922	120	105.8
1923	90	105.8
1925	138	105.8
1926	116	105.8
1927	97	105.8
1928	90	105.8
1929	85	105.8
1930	101	107.9
1931	115	107.9
1932	111	107.9
1933	110	107.9
1934	111	107.9
1935	100	107.9
1936	121	107.9
1937	99	107.9
1938	104	107.9
1939	107	107.9
1940	78	83.5
1941	118	83.5
1942	87	83.5
1943	100	83.5
1944	99	83.5
1945	73	83.5
1946	57	83.5
1947	75	83.5
1948	87	83.5
1949	61	83.5
1950	45	105.8
1951	89	105.8
1952	90	105.8
1953	131	105.8
1954	128	105.8
1955	120	105.8
1956	124	105.8
1957	97	105.8
1958	109	105.8
1959	125	105.8
1960	123	109.5
1961	99	109.5
1962	130	109.5
1963	135	109.5
1964	100	109.5
1965	113	109.5
1966	96	109.5
1967	86	109.5
1968	102	109.5
1969	111	109.5
1970	113	97.2
1971	110	97.2
1972	108	97.2
1973	112	97.2
1974	74	97.2
1975	95	97.2
1976	69	97.2
1977	114	97.2
1978	103	97.2
1979	74	97.2
1980	107	95
1981	85	95
1982	98	95
1983	99	95
1984	84	95
1985	95	95
1986	103	95
1987	113	95
1988	93	95
1989	73	95
1990	85	84.5
1991	93	84.5
1992	52	84.5
1993	94	84.5
1994	75	84.5
1995	89	84.5
1996	80	84.5
1997	71	84.5
1998	112	84.5
1999	94	84.5
2000	93	93.6
2001	91	93.6
2002	106	93.6
2003	82	93.6
2004	71	93.6
2006	106	93.6
2007	128	93.6
2008	92	93.6
2009	73	93.6
2010	124	108.4
2011	107	108.4
2012	111	108.4
2013	93	108.4
2014	88	108.4
2015	98	108.4
2016	119	108.4
2017	103	108.4
2018	133	108.4
2020	92	92.6
2021	83	92.6
2022	101	92.6
2023	91	92.6
2024	89	92.6
2025	106	92.6
2026	86	92.6

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

First to last qualifying date each year at Brownsville
Year	First date	Last date
1908	1908-04-25	1908-10-20
1909	1909-06-06	1909-10-04
1911	1911-05-13	1911-10-07
1915	1915-04-20	1915-09-28
1918	1918-04-03	1918-10-05
1919	1919-04-08	1919-10-10
1920	1920-04-18	1920-10-22
1921	1921-04-25	1921-10-19
1922	1922-04-06	1922-10-05
1923	1923-04-22	1923-09-30
1925	1925-04-14	1925-10-04
1926	1926-04-17	1926-10-18
1927	1927-04-03	1927-10-29
1928	1928-05-02	1928-10-15
1929	1929-03-24	1929-09-29
1930	1930-04-10	1930-09-25
1931	1931-04-15	1931-10-26
1932	1932-04-20	1932-09-19
1933	1933-05-18	1933-09-30
1934	1934-04-04	1934-09-26
1935	1935-03-23	1935-10-13
1936	1936-04-14	1936-09-28
1937	1937-04-17	1937-10-06
1938	1938-05-19	1938-10-17
1939	1939-03-23	1939-10-23
1940	1940-04-03	1940-10-28
1941	1941-04-11	1941-10-09
1942	1942-05-27	1942-10-03
1943	1943-04-10	1943-09-04
1944	1944-05-15	1944-10-06
1945	1945-05-27	1945-09-28
1946	1946-06-08	1946-09-10
1947	1947-05-15	1947-09-19
1948	1948-05-21	1948-09-22
1949	1949-05-04	1949-09-17
1950	1950-05-23	1950-09-19
1951	1951-04-28	1951-10-06
1952	1952-04-29	1952-10-01
1953	1953-05-01	1953-10-24
1954	1954-04-14	1954-10-11
1955	1955-04-17	1955-10-06
1956	1956-04-28	1956-10-17
1957	1957-04-19	1957-09-21
1958	1958-05-12	1958-10-17
1959	1959-04-30	1959-10-10
1960	1960-04-06	1960-10-03
1961	1961-05-05	1961-10-30
1962	1962-04-27	1962-10-16
1963	1963-03-30	1963-10-27
1964	1964-05-17	1964-10-02
1965	1965-04-21	1965-10-17
1966	1966-05-06	1966-09-27
1967	1967-03-12	1967-10-15
1968	1968-04-18	1968-10-15
1969	1969-04-16	1969-10-20
1970	1970-04-23	1970-10-02
1971	1971-04-17	1971-10-28
1972	1972-04-13	1972-09-28
1973	1973-05-10	1973-10-11
1974	1974-04-27	1974-09-12
1975	1975-04-26	1975-10-15
1976	1976-06-09	1976-10-05
1977	1977-04-14	1977-09-27
1978	1978-04-06	1978-10-23
1979	1979-05-11	1979-10-22
1980	1980-04-23	1980-10-11
1981	1981-04-28	1981-10-06
1982	1982-03-19	1982-10-07
1983	1983-06-10	1983-10-04
1984	1984-04-26	1984-11-01
1985	1985-04-19	1985-10-19
1986	1986-05-01	1986-10-05
1987	1987-04-21	1987-10-11
1988	1988-04-06	1988-09-24
1989	1989-04-23	1989-09-14
1990	1990-04-25	1990-09-30
1991	1991-05-15	1991-10-04
1992	1992-04-16	1992-09-15
1993	1993-05-07	1993-09-24
1994	1994-05-24	1994-09-29
1995	1995-04-10	1995-10-14
1996	1996-04-20	1996-09-12
1997	1997-05-19	1997-10-12
1998	1998-05-14	1998-10-05
1999	1999-05-17	1999-10-04
2000	2000-05-13	2000-10-06
2001	2001-04-11	2001-09-24
2002	2002-04-16	2002-10-03
2003	2003-04-15	2003-09-27
2004	2004-05-08	2004-10-27
2006	2006-04-18	2006-10-19
2007	2007-05-01	2007-10-08
2008	2008-05-05	2008-09-29
2009	2009-04-23	2009-09-10
2010	2010-05-05	2010-10-12
2011	2011-04-10	2011-10-18
2012	2012-04-01	2012-09-28
2013	2013-04-18	2013-10-06
2014	2014-05-05	2014-10-28
2015	2015-04-09	2015-10-13
2016	2016-05-12	2016-11-01
2017	2017-04-14	2017-10-16
2018	2018-05-03	2018-10-10
2020	2020-03-27	2020-09-14
2021	2021-05-22	2021-10-13
2022	2022-05-11	2022-09-25
2023	2023-04-05	2023-10-04
2024	2024-05-20	2024-10-24
2025	2025-04-03	2025-10-06
2026	2026-03-23	2026-09-14

Every Fixed Threshold

Fixed thresholds at Brownsville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	110	138	1925	86
35 C (95 F): Days	109	78	1954	19
40 C (104 F): Days	15	11	1925	1
90 F (32.2 C): Days	110	114	1925	57
100 F (37.8 C): Days	48	33	1925	1
0 C (32 F): Ice days (max	104	27	1978	8
0 C (32 F): Frost days (min	115	95	1979	37
-10 C (14 F): Days with min	97	21	1963	8
-20 C (-4 F): Days with min	11	3	1989	3
20 C (68 F): Tropical nights (min	115	113	2018	83
25 C (77 F): Days with min	75	14	2010	4
10 mm (0.39 in): Days with 10 mm or more rain	114	65	1974	23
25 mm (0.98 in): Days with 25 mm or more rain	114	27	1990	13
50 mm (1.97 in): Days with 50 mm or more rain	112	9	1957	6
100 mm (3.94 in): Days with 100 mm or more rain	29	3	2025	3
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2010	1
10 cm (3.9 in): Days with 10 cm or more snowfall	20	3	1985	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Brownsville 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Brownsville Threshold Days by Year (USC00401145)

Key Facts for Brownsville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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