San Antonio, TX: September

30 September 2026: September 2026 averaged 87.1°F in San Antonio, TX, the warmest September on record, in 142 years since 1885; provisional.

September 2026

Mean temperature: 87.1°F; Warmest on record; Warmest of 142, provisional
Precipitation: 0.48 in; Driest since 2023; 11th driest of 142

A normal September in San Antonio, TX (1991 to 2020): a mean temperature of 80.2°F, between 78.3°F and 83.4°F in eight years of ten and 2.87 in of precipitation, between 1.03 in and 7.50 in in eight years of ten.

The mean temperature of every September in San Antonio, TX since 1885: 87.1°F in 2026, the highest of them all.

Normal range, 78.3 to 83.4°F

Every year, ranked, as a table

Every September in San Antonio, TX from 1885 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
2026	87.1	1	97.1	2	77	1	0.48	132
2025	81.7	28	92.3	27	71	35	1.29	108
2024	83.3	10	93.8	14	72.7	11	1.46	97
2023	87	2	98.2	1	75.8	2	0.43	134
2022	82.5	15	93.3	20	71.6	26	0.98	116
2021	82.1	20	94.2	10	69.9	62	2.59	65
2020	78.9	92	89	90	68.8	87	3.09	52
2019	85.8	3	96.5	3	75.1	5	1.45	98
2018	79.3	82	86.7	124	71.9	24	16.86	1
2017	79.4	79	89.2	85	69.5	71	2.80	62
2016	81.8	26	91.2	45	72.4	15	6.30	20
2015	83.5	8	93.9	12	73	9	2.32	69
2014	82	22	91.8	38	72.1	22	1.77	84
2013	83.4	9	94.4	9	72.3	17	3.70	46
2012	79.6	72	90.4	66	68.8	87	7.31	16
2011	82.9	12	96.2	4	69.5	71	2.93	59
2010	80.1	60	89	90	71.2	31	9.37	6
2009	78.4	103	87.6	115	69.3	78	6.35	19
2008	79.5	77	90.9	51	68	100	0.46	133
2007	80.2	57	89.1	89	71.4	30	1.09	113
2006	79.7	70	90.6	59	68.8	87	4.11	37
2005	84.3	5	95.4	5	73.1	8	1.39	102
2004	80.5	48	90.5	61	70.5	51	1.92	79
2003	76.7	130	85.7	135	67.7	105	9.21	7
2002	78.7	95	88.2	107	69.1	81	7.02	18
2001	76.9	129	86.7	124	67	118	4.05	39
2000	80.9	40	94.5	8	67.4	112	2.65	64
1999	80.3	54	92.2	29	68.3	95	0.05	140
1998	80.5	48	88.5	102	72.4	15	1.57	90
1997	82.2	19	93.5	16	70.8	41	1.86	81
1996	78.4	103	88.4	103	68.4	92	3.66	48
1995	80.1	60	91.1	49	69.1	81	4.49	31
1994	78.4	103	90.8	54	66	132	5.52	23
1993	81.5	32	94	11	69	83	0.52	129
1992	81.7	28	92.5	24	70.9	37	1.12	110
1991	77.8	117	88	110	67.6	106	1.42	99
1990	80	63	90.4	66	69.6	69	3.70	46
1989	79	89	92.2	29	65.9	133	1.54	91
1988	80.7	45	92	34	69.4	77	0.83	121
1987	79.2	86	90.8	54	67.6	106	2.24	70
1986	83.7	6	91.8	38	75.5	3	2.83	61
1985	79.4	79	88.9	94	69.8	63	4.80	29
1984	77.6	120	88	110	67.2	117	1.06	115
1983	78.5	101	88.9	94	68	100	3.86	41
1982	80	63	92.3	27	67.8	104	0.87	119
1981	78.9	92	90.5	61	67.3	115	1.36	104
1980	83.6	7	92.1	32	75.2	4	5.05	27
1979	78.7	95	89.3	81	68.1	98	0.86	120
1978	78.5	101	86.1	131	70.9	37	8.86	9
1977	82.3	18	92.1	32	72.5	14	2.11	74
1976	77.5	121	87	121	68	100	3.79	43
1975	76	135	86.2	128	65.8	135	0.51	131
1974	72.3	142	80.7	142	63.9	142	3.85	42
1973	79.3	82	87.5	118	71.1	33	13.09	3
1972	81.9	24	91.2	45	72.7	11	1.40	101
1971	80.1	60	88.4	103	71.7	25	4.57	30
1970	81.1	38	90.6	59	71.6	26	4.35	32
1969	79.6	72	90.3	68	68.8	87	1.32	105
1968	75.9	136	87	121	64.9	140	2.99	56
1967	75.5	139	83.9	140	67	118	11.16	4
1966	77.5	121	87.6	115	67.4	112	2.13	73
1965	80.7	45	91.9	37	69.5	71	3.13	51
1964	80	63	89.2	85	70.8	41	4.15	35
1963	81.1	38	91.8	38	70.3	54	1.11	111
1962	80.9	40	90.7	57	71	35	2.69	63
1961	80.5	48	90.1	73	70.9	37	2.24	70
1960	78.6	98	90.9	51	66.3	125	0.76	124
1959	81.4	36	91.2	45	71.5	28	1.72	88
1958	79.2	86	87.3	119	71.1	33	8.36	11
1957	77.8	117	88.7	97	66.9	120	11.10	5
1956	79.9	67	91.8	38	68.1	98	0.62	125
1955	81.9	24	91.8	38	72	23	0.79	122
1954	82.6	14	94.6	7	70.6	48	0.52	129
1953	78.3	108	90.7	57	65.9	133	2.48	67
1952	77.5	121	88.6	100	66.3	125	3.02	53
1951	80.5	48	90.5	61	70.4	52	3.75	45
1950	79.5	77	89.3	81	69.7	66	3.02	53
1949	80.8	42	91.3	44	70.3	54	0.78	123
1948	77.7	119	88.6	100	66.9	120	1.98	76
1947	80.3	54	93.4	17	67.3	115	0.06	139
1946	78.1	110	86.2	128	70.1	57	15.78	2
1945	80.2	57	92.9	21	67.6	106	3.00	55
1944	78	112	89.2	85	66.9	120	1.30	107
1943	76.4	132	86.6	126	66.2	128	4.34	33
1942	75.6	137	85.9	133	65.3	138	7.67	14
1941	81.6	31	91	50	72.2	20	4.88	28
1940	79	89	90.3	68	67.6	106	1.42	99
1939	81.2	37	92	34	70.4	52	1.90	80
1938	79.7	70	90.3	68	69	83	1.82	82
1937	82	22	92.5	24	71.5	28	0.04	141
1936	79.3	82	87.6	115	70.9	37	4.07	38
1935	77	128	85.7	135	68.2	96	5.61	22
1934	80.2	57	90.1	73	70.3	54	1.95	77
1933	82.8	13	92	34	73.7	7	3.18	50
1932	77.3	126	85.4	137	69.2	79	8.77	10
1931	83.3	10	93.9	12	72.6	13	0.01	142
1930	80.7	45	91.6	43	69.8	63	1.74	86
1929	80.3	54	90.8	54	69.8	63	2.02	75
1928	77.4	125	86.1	131	68.7	91	6.30	20
1927	80.5	48	90.3	68	70.6	48	1.52	92
1926	82.5	15	92.7	22	72.2	20	0.43	134
1925	80.8	42	89.2	85	72.3	17	2.87	60
1924	78.4	103	89.3	81	67.6	106	2.52	66
1923	79.2	86	87.8	114	70.7	45	2.98	57
1922	79.6	72	89.6	78	69.7	66	0.97	117
1921	81.7	28	90.5	61	72.9	10	8.27	12
1920	82.1	20	93.4	17	70.8	41	0.15	136
1919	77.9	115	86.2	128	69.5	71	7.61	15
1918	76.4	132	87.9	113	64.9	140	1.49	94
1917	79.3	82	89.6	78	69	83	1.39	102
1916	78	112	88	110	68	100	3.78	44
1915	79.8	68	88.4	103	71.2	31	2.39	68
1914	79.6	72	90.2	72	69	83	2.24	70
1913	75.6	137	85	138	66.1	129	7.21	17
1912	81.5	32	92.5	24	70.6	48	1.47	96
1911	84.6	4	94.8	6	74.3	6	0.12	137
1910	81.5	32	92.2	29	70.8	41	0.56	127
1909	79	89	90.5	61	67.5	111	0.56	127
1908	77.2	127	88.2	107	66.1	129	3.92	40
1907	81.5	32	93.4	17	69.5	71	1.11	111
1906	80	63	89.8	75	70.1	57	1.74	86
1905	80.5	48	91.2	45	69.7	66	1.80	83
1904	79.8	68	88.9	94	70.7	45	7.74	13
1903	76.7	130	87.3	119	66.1	129	2.96	58
1902	78.6	98	89	90	68.2	96	5.52	23
1901	78.4	103	88.4	103	68.4	92	4.20	34
1900	82.4	17	92.6	23	72.3	17	0.97	117
1899	78.1	110	89.8	75	66.3	125	0.57	126
1898	79.6	72	89.6	78	69.5	71	1.32	105
1897	77.5	121	88.1	109	66.9	120	1.61	89
1896	78.7	95	89	90	68.4	92	8.87	8
1895	80.8	42	90.9	51	70.7	45	1.25	109
1894	79.4	79	88.7	97	70	59	1.48	95
1893	81.8	26	93.6	15	70	59	0.10	138
1892	77.9	115	89.3	81	66.5	124	1.09	113
1891	78.6	98	89.7	77	67.4	112	3.60	49
1890	76.1	134	86.4	127	65.8	135	5.41	26
1889	73.6	141	82.1	141	65.1	139	5.47	25
1888	75.3	140	84.9	139	65.7	137	1.93	78
1887	78.3	108	86.9	123	69.6	69	1.77	84
1886	78	112	85.9	133	70	59	4.12	36
1885	78.9	92	88.7	97	69.2	79	1.51	93

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2026	87.1
2023	87
2019	85.8
1911	84.6
2005	84.3
1986	83.7
1980	83.6
2015	83.5
2013	83.4
2024	83.3
More years share the last value

Coldest
Year	Mean, °F
1974	72.3
1889	73.6
1888	75.3
1967	75.5
1942	75.6
1913	75.6
1968	75.9
1975	76
1890	76.1
1943	76.4
More years share the last value

Wettest
Year	Precipitation, in
2018	16.86
1946	15.78
1973	13.09
1967	11.16
1957	11.10
2010	9.37
2003	9.21
1896	8.87
1978	8.86
1932	8.77

Driest
Year	Precipitation, in
1931	0.01
1937	0.04
1999	0.05
1947	0.06
1893	0.10
1911	0.12
1920	0.15
2023	0.43
1926	0.43
2008	0.46

The hottest, coldest and wettest days

Hottest day: 101°F; 15 September 2026
Coldest night: 71°F; 27 September 2026
Wettest day: 0.29 in; 18 September 2026

Every month, season and year

Months

Seasons

Years

San Antonio, TX the day's answers

All-time records

Every answer in words

September 2026 brought 0.48 in of precipitation in San Antonio, TX, the driest September since 2023, 11th driest of 142.
The hottest day of September 2026 in San Antonio, TX: 101°F on Tuesday 15 September 2026.
The coldest night of September 2026 in San Antonio, TX: a low of 71°F on Sunday 27 September 2026.
The wettest day of September 2026 in San Antonio, TX: 0.29 in on Friday 18 September 2026.