Brownsville, TX: September

30 September 2026: September 2026 averaged 89.8°F in Brownsville, TX, the warmest September on record, in 146 years since 1878 (1892 excluded: 11 of 30 days missing; 1898 excluded: 30 of 30 days missing; 1912 excluded: 4 of 30 days missing); provisional.

September 2026

Mean temperature: 89.8°F; Warmest on record; Warmest of 146, provisional
Precipitation: 1.46 in; Driest since 2023; 17th driest of 148

A normal September in Brownsville, TX (1991 to 2020): a mean temperature of 82.4°F, between 80.3°F and 84.8°F in eight years of ten and 4.61 in of precipitation, between 2.10 in and 10.51 in in eight years of ten.

The mean temperature of every September in Brownsville, TX since 1878: 89.8°F in 2026, the highest of them all.

Normal range, 80.3 to 84.8°F

Every year, ranked, as a table

Every September in Brownsville, TX from 1878 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	89.8	1	99.2	1	80.3	1	1.46	132	0
2025	85.2	4	93.6	13	76.7	5	3.64	93	0
2024	83.7	17	90.7	50	76.7	5	10.75	14	0
2023	88.5	2	98.8	2	78.2	2	0.02	148	0
2022	83.5	18	92.4	25	74.5	36	4.56	75	0
2021	84.3	11	93.8	12	74.8	25	4.64	71	0
2020	81.6	75	89.9	79	73.3	74	5.96	50	0
2019	85.1	5	92.9	19	77.4	3	4.58	74	0
2018	84.9	7	92.4	25	77.3	4	7.71	33	0
2017	82.5	44	90.9	48	74.2	41	4.64	71	0
2016	85.3	3	94.7	6	75.9	8	1.98	121	0
2015	81.9	65	90.5	60	73.3	74	3.84	89	0
2014	82.4	45	89.5	89	75.2	16	10.36	16	0
2013	82.7	37	90.2	67	75.1	17	11.88	11	0
2012	83.4	20	93.4	14	73.3	74	3.76	91	0
2011	84.2	14	94.9	5	73.5	65	2.14	118	0
2010	82.6	40	90.2	67	75.1	17	12.63	9	0
2009	82	59	90.1	74	74	46	9.43	19	0
2008	80	118	88.3	115	71.6	112	9.57	18	0
2007	82.4	45	90.5	60	74.3	38	5.32	55	0
2006	82.4	45	91	45	73.7	54	3.67	92	0
2005	84.8	9	93.9	10	75.7	11	2.70	107	0
2004	81.8	67	90.5	60	73.2	81	4.05	85	0
2003	80.9	94	88.4	113	73.4	68	15.13	5	0
2002	82.6	40	92.1	30	73.1	83	6.04	48	0
2001	81.7	70	90.3	63	73.2	81	3.25	97	0
2000	82.6	40	93.4	14	71.9	106	0.66	142	0
1999	80.3	109	90	77	70.5	129	3.99	86	0
1998	82.9	31	90.1	74	75.7	11	7.82	31	0
1997	82.2	53	91.9	33	72.5	98	4.77	67	0
1996	81.6	75	89	100	74.1	44	8.57	25	0
1995	82	59	91	45	73	87	2.11	119	0
1994	79.6	127	89.6	86	69.7	142	4.09	84	0
1993	82.8	35	92.1	30	73.6	60	1.93	123	0
1992	82	59	90.2	67	73.7	54	3.62	94	0
1991	79.6	127	88.1	121	71.1	120	5.57	52	0
1990	81.3	84	90	77	72.6	94	3.90	88	0
1989	81	91	91.6	39	70.3	133	2.46	112	0
1988	80.8	99	89.4	91	72.2	101	7.48	36	0
1987	83	27	92.5	23	73.4	68	4.70	70	0
1986	84.3	11	92.9	19	75.8	10	1.71	125	0
1985	82	59	90.3	63	73.8	49	6.04	48	0
1984	79.4	131	86.6	139	72.2	101	20.18	2	0
1983	81.6	75	90.2	67	73.1	83	8.61	24	0
1982	83.4	20	93.4	14	73.4	68	2.42	114	0
1981	81.7	70	90.7	50	72.6	94	5.05	59	0
1980	84.9	7	94.2	7	75.5	14	1.48	131	0
1979	77.7	144	85.2	145	70.1	135	8.84	23	0
1978	82.3	49	89.2	94	75.4	15	8.28	27	0
1977	84.3	11	93.9	10	74.6	31	2.84	102	0
1976	81.7	70	90.1	74	73.3	74	2.85	101	0
1975	78.3	143	86.8	136	69.8	140	4.77	67	0
1974	80	118	89.2	94	70.7	124	4.93	64	0
1973	81.6	75	89.9	79	73.3	74	4.61	73	0
1972	82	59	90.7	50	73.3	74	4.22	82	0
1971	81.3	84	89	100	73.7	54	10.78	13	0
1970	82.7	37	90.6	57	74.8	25	6.95	43	0
1969	81.8	67	89.8	82	73.8	49	2.80	104	0
1968	81.6	75	89.4	91	73.8	49	4.48	78	0
1967	77.7	144	84.7	146	70.6	127	19.26	3	0
1966	81.2	89	90.7	50	71.7	109	0.52	143	0
1965	81.8	67	90.2	67	73.4	68	5.40	54	0
1964	83.1	25	91.3	40	75	20	4.94	63	0
1963	82.4	45	90.9	48	73.9	47	4.31	80	0
1962	83.3	23	91.9	33	74.6	31	1.98	121	0
1961	80.5	106	87.2	135	73.7	54	13.30	8	0
1960	78.7	141	87.7	129	69.7	142	4.88	65	0
1959	83.9	15	92.7	21	75.1	17	0.07	147	0
1958	81.7	70	89.1	98	74.3	38	6.18	47	0
1957	80.9	94	89.7	84	72.1	104	1.34	134	0
1956	79.4	131	88.3	115	70.5	129	3.25	97	0
1955	81.4	82	88.1	121	74.7	27	8.30	26	0
1954	83.3	23	92	32	74.6	31	4.73	69	0
1953	81	91	91.1	42	70.9	123	0.50	144	0
1952	80.3	109	88.9	104	71.7	109	5.56	53	0
1951	82.2	53	90.3	63	74.2	41	4.97	62	0
1950	83.8	16	92.6	22	74.9	23	2.82	103	0
1949	82.3	49	89.6	86	75	20	7.40	39	0
1948	80.1	116	88.5	111	71.7	109	8.90	22	0
1947	82.2	53	92.5	23	71.8	107	2.34	117	0
1946	83	27	91.2	41	74.7	27	8.05	29	0
1945	81.3	84	90.2	67	72.5	98	3.13	100	0
1944	81.3	84	89	100	73.6	60	6.54	46	0
1943	80.9	94	88.7	108	73.1	83	7.27	41	0
1942	79.9	121	88.3	115	71.4	117	2.46	112	0
1941	82.9	31	89.8	82	75.9	8	4.41	79	0
1940	80.3	109	89	100	71.6	112	1.58	129	0
1939	80.2	113	87.7	129	72.8	92	3.62	94	0
1938	80.8	99	88.8	106	72.8	92	1.65	126	0
1937	81.5	80	89.6	86	73.4	68	1.60	127	0
1936	80.1	116	86.4	142	73.8	49	8.15	28	0
1935	79.5	130	86.6	139	72.5	98	5.20	57	0
1934	80.7	102	87.8	126	73.6	60	7.49	35	0
1933	81.9	65	87.5	132	76.2	7	7.09	42	0
1932	80.5	106	87.5	132	73.4	68	9.88	17	0
1931	82.1	57	89.4	91	74.7	27	1.43	133	0
1930	82.7	37	90.7	50	74.6	31	2.80	104	0
1929	81.3	84	88.8	106	73.7	54	5.16	58	0
1928	79.8	123	86.6	139	72.9	89	8.91	21	0
1927	82.6	40	90.3	63	74.9	23	4.82	66	0
1926	83	27	91	45	75	20	4.27	81	0
1925	80.7	102	86.7	137	74.7	27	19.21	4	0
1924	80.2	113	87.8	126	72.6	94	7.29	40	0
1923	82.9	31	90.2	67	75.7	11	4.55	76	0
1922	80.7	102	87.9	124	73.5	65	12.61	10	0
1921	83	27	91.8	35	74.2	41	3.82	90	0
1920	84.4	10	95.3	4	73.5	65	0.34	146	0
1919	82.3	49	92.4	25	72.2	101	7.69	34	0
1918	80.8	99	93.1	17	68.5	147	0.97	139	0
1917	78.9	139	88.7	108	69	145	1.03	136	0
1916	79.9	121	88.5	111	71.4	117	3.21	99	0
1915	82.2	53	90.7	50	73.6	60	2.54	111	1
1914	80.9	94	91.8	35	70	136	0.86	140	0
1913	79.2	135	88.4	113	69.9	138	14.38	6	0
1912					71.5	115	2.35	116	4
1911	83.4	20	93	18	73.7	54	2.75	106	0
1910	80.2	113	87.9	124	72.6	94	10.71	15	0
1909	79.3	134	88.2	119	70.4	132	1.21	135	0
1908	80	118	89.2	94	70.7	124	5.01	61	0
1907	82.3	49	91.7	37	72.9	89	1.59	128	0
1906	83.5	18	92.3	29	74.6	31	1.01	138	0
1905	83.1	25	92.4	25	73.8	49	3.92	87	0
1904	82.1	57	90.7	50	73.6	60	4.50	77	0
1903	80.6	105	89.7	84	71.5	115	2.03	120	0
1902	82.9	31	94.1	8	71.8	107	6.90	44	3
1901	80.5	106	91.1	42	69.9	138	8.00	30	0
1900	85	6	96.6	3	73.3	74	0.70	141	0
1899	80.3	109	91.7	37	68.8	146	2.70	107	0
1897	79.2	135	88.9	104	69.6	144	2.38	115	0
1896	80.9	94	91.1	42	70.7	124	4.21	83	0
1895	81.5	80	88.7	108	74.3	38	5.72	51	0
1894	81.4	82	90.6	57	72.1	104	2.66	110	0
1893	82.8	35	94.1	8	71.4	117	1.02	137	0
1892			90.6	57			0.46	145	11
1891	79.1	137	87.6	131	70.5	129	6.73	45	0
1890	79.8	123	89.9	79	69.8	140	1.51	130	0
1889	77.2	146	83.8	147	70.6	127	7.44	38	0
1888	79.4	131	87.3	134	71.6	112	7.46	37	0
1887	79.7	125	86.3	143	73.1	83	13.65	7	0
1886	79.1	137	85.3	144	72.9	89	30.57	1	0
1885	81.7	70	89.2	94	74.1	44	3.55	96	0
1884	82	59	89.5	89	74.5	36	8.96	20	0
1883	78.9	139	87.8	126	70	136	7.74	32	0
1882	79.7	125	88.3	115	71	121	2.68	109	0
1881	79.6	127	88.2	119	71	121	5.02	60	0
1880	81	91	88.1	121	73.9	47	1.90	124	0
1879	78.5	142	86.7	137	70.2	134	11.64	12	0
1878	81.1	90	89.1	98	73	87	5.21	56	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2026	89.8
2023	88.5
2016	85.3
2025	85.2
2019	85.1
1900	85
2018	84.9
1980	84.9
2005	84.8
1920	84.4

Coldest
Year	Mean, °F
1889	77.2
1979	77.7
1967	77.7
1975	78.3
1879	78.5
1960	78.7
1917	78.9
1883	78.9
1891	79.1
1886	79.1

Wettest
Year	Precipitation, in
1886	30.57
1984	20.18
1967	19.26
1925	19.21
2003	15.13
1913	14.38
1887	13.65
1961	13.30
2010	12.63
1922	12.61

Driest
Year	Precipitation, in
2023	0.02
1959	0.07
1920	0.34
1892	0.46
1953	0.50
1966	0.52
2000	0.66
1900	0.70
1914	0.86
1918	0.97

The hottest, coldest and wettest days

Hottest day: 102°F; 10 September 2026, 2 September 2026
Coldest night: 77°F; 28 September 2026, 20 September 2026, 1 September 2026
Wettest day: 0.53 in; 29 September 2026

Every month, season and year

Months

Seasons

Years

Brownsville, TX the day's answers

All-time records

Every answer in words

September 2026 brought 1.46 in of precipitation in Brownsville, TX, the driest September since 2023, 17th driest of 148.
The hottest day of September 2026 in Brownsville, TX: 102°F on Thursday 10 September 2026 and Wednesday 2 September 2026.
The coldest night of September 2026 in Brownsville, TX: a low of 77°F on Monday 28 September 2026, Sunday 20 September 2026 and Tuesday 1 September 2026.
The wettest day of September 2026 in Brownsville, TX: 0.53 in on Tuesday 29 September 2026.