St Louis, MO: Summer

31 August 2026: Summer 2026 averaged 78.9°F in St Louis, MO, the warmest summer since 2025, 42nd warmest of 153.

Summer 2026

Mean temperature: 78.9°F; Warmest since 2025; 42nd warmest of 153
Precipitation: 17.59 in; Wettest since 2022; 11th wettest of 147

A normal summer in St Louis, MO (1991 to 2020): a mean temperature of 78.5°F, between 76.5°F and 81.3°F in eight years of ten and 11.09 in of precipitation, between 7.29 in and 16.72 in in eight years of ten.

The mean temperature of every summer in St Louis, MO since 1874: 78.9°F in 2026; the highest is 82.6°F, in 1901.

Normal range, 76.5 to 81.3°F

Every year, ranked, as a table

Every summer in St Louis, MO from 1874 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	78.9	42	87.4	64	70.4	24	17.59	11	0
2025	79.5	29	88.2	47	70.8	14	10.44	68	0
2024	79.9	23	89.1	31	70.7	20	10.89	62	0
2023	79.4	32	89.1	31	69.8	39	11.43	55	0
2022	80.6	15	90.1	19	71.1	10	19.79	6	0
2021	79.9	23	89	34	70.8	14	16.13	21	0
2020	79.5	29	88.8	39	70.2	30	16.49	18	0
2019	78.3	55	86.9	78	69.8	39	16.69	17	0
2018	80.1	20	89.4	24	70.8	14	9.75	80	0
2017	79.4	32	89.4	24	69.5	48	7.40	115	0
2016	81.2	9	90	20	72.4	4	15.43	25	0
2015	78.7	44	87.1	73	70.2	30	23.94	2	0
2014	78.3	55	87.2	71	69.3	55	11.91	48	0
2013	77.5	80	86.4	92	68.6	69	10.47	66	0
2012	82	4	93.2	3	70.8	14	6.69	127	0
2011	82	4	91.3	9	72.7	1	13.05	39	0
2010	81.7	6	90.8	13	72.7	1	14.35	30	0
2009	76.5	107	85.3	114	67.7	90	13.10	38	0
2008	77.6	79	86.8	81	68.4	77	10.98	61	0
2007	79.8	25	89.5	23	70.1	34	7.56	114	0
2006	79.6	27	89.3	27	70	36	7.37	116	0
2005	79.6	27	88.9	38	70.2	30	11.19	59	0
2004	75.3	134	84	137	66.6	119	10.45	67	0
2003	77.4	83	86.6	90	68.2	81	17.40	13	0
2002	80.3	17	89.4	24	71.2	8	10.85	63	0
2001	78.1	64	87.3	66	69	59	9.59	86	0
2000	77	92	85.5	107	68.5	74	14.11	34	0
1999	78.1	64	87.3	66	68.9	60	11.43	55	0
1998	77.9	71	86.3	94	69.4	51	15.64	24	0
1997	76.6	104	85.5	107	67.7	90	6.80	125	0
1996	76	118	85.2	116	66.8	115	11.62	54	0
1995	80.3	17	89.3	27	71.3	7	9.64	84	0
1994	78.3	55	87.8	54	68.9	60	7.34	117	0
1993	79.1	37	87.6	58	70.6	22	16.96	15	0
1992	75.4	132	84.4	129	66.4	122	8.95	99	0
1991	80.1	20	89.9	21	70.3	27	6.60	129	0
1990	78.4	50	87.5	60	69.4	51	9.20	96	0
1989	77.3	86	86.1	99	68.5	74	9.93	77	0
1988	80.7	13	91	11	70.3	27	7.30	119	0
1987	79.2	35	88.7	41	69.8	39	14.19	32	0
1986	78.4	50	88.4	43	68.3	80	9.26	92	0
1985	75.2	135	84.2	133	66.3	126	18.32	10	0
1984	79.5	29	89.3	27	69.7	42	4.14	145	0
1983	81	11	91	11	71.1	10	7.79	109	0
1982	75.1	138	83.7	144	66.4	122	19.14	7	0
1981	76.8	100	85	122	68.6	69	19.84	5	0
1980	81.4	7	91.8	7	70.9	13	8.47	104	0
1979	78	69	87.6	58	68.4	77	7.60	112	0
1978	76.4	108	86.7	88	66.2	129	9.18	97	0
1977	77.4	83	87.2	71	67.6	93	15.09	27	0
1976	75.5	130	86.6	90	64.4	148	5.87	137	0
1975	76.9	98	86.8	81	66.9	113	11.78	51	0
1974	74.6	145	85.6	106	63.7	151	9.40	88	0
1973	76.8	100	87.4	64	66.1	131	9.54	87	0
1972	75.7	125	87	77	64.5	147	6.98	124	0
1971	76.6	104	87.5	60	65.8	138	7.21	120	0
1970	75.6	128	85.4	112	65.8	138	12.12	47	0
1969	76.7	103	87.1	73	66.3	126	16.25	20	0
1968	77.3	86	87.1	73	67.5	96	6.42	131	0
1967	73.7	151	83.8	140	63.7	151	9.66	83	0
1966	77	92	88.1	49	65.8	138	6.57	130	0
1965	75.8	124	85.9	102	65.8	138	9.79	79	0
1964	76.6	104	86.8	81	66.4	122	9.37	89	0
1963	75.9	120	86.8	81	64.9	144	7.79	109	0
1962	75.1	138	85.5	107	64.8	145	12.53	43	0
1961	73.9	149	84.1	135	63.7	151	11.75	52	0
1960	76.4	108	85.5	107	67.4	99	11.22	58	0
1959	78.4	50	87.9	53	68.9	60	4.68	143	0
1958	75.2	135	84.3	132	66.1	131	16.44	19	0
1957	78.3	55	88	51	68.6	69	15.74	23	0
1956	77.7	76	88.1	49	67.3	102	11.63	53	0
1955	78.4	50	89	34	67.8	88	10.08	75	0
1954	81.4	7	92.5	5	70.4	24	9.35	91	0
1953	80.4	16	91.9	6	68.9	60	4.21	144	0
1952	80.3	17	91.5	8	69.2	56	8.73	102	0
1951	75.7	125	85.3	114	66.1	131	11.89	49	0
1950	73.9	149	83.6	146	64.1	150	8.24	106	0
1949	78	69	87.3	66	68.7	64	13.36	36	0
1948	77	92	87.3	66	66.8	115	19.89	4	0
1947	78.1	64	88.2	47	68	84	8.95	99	3
1946	75.9	120	85.9	102	65.9	135	18.65	9	0
1945	74.4	146	84.4	129	64.4	148	12.83	40	0
1944	77.9	71	88.4	43	67.3	102	8.41	105	0
1943	79.1	37	89	34	69.2	56	10.17	74	0
1942	76.2	113	85.5	107	66.8	115	17.48	12	0
1941	78.4	50	90.3	16	66.6	119	5.23	140	0
1940	76.9	98	87.8	54	66	134	6.30	134	0
1939	77	92	86.8	81	67.2	107	14.07	35	0
1938	78.5	47	89	34	67.9	85	10.36	69	0
1937	78.3	55	89.3	27	67.3	102	9.26	92	0
1936	82.3	2	94.2	1	70.4	24			0
1935	76.1	115	85.2	116	67.1	109			0
1934	82.1	3	93.4	2	70.8	14			0
1933	78.8	43	90.3	16	67.3	102			0
1932	78.1	64	88.8	39	67.3	102			0
1931	78.5	47	89.7	22	67.4	99	10.24	72	0
1930	78.3	55	90.3	16	66.4	122			0
1929	76.4	108	85.1	120	67.6	93	9.72	81	0
1928	75.4	132	83.8	140	67.1	109	18.74	8	0
1927	73.7	151	82	152	65.3	143	7.98	108	0
1926	77.7	76	86.8	81	68.7	64	4.09	147	0
1925	78.5	47	87.5	60	69.6	45	9.37	89	0
1924	75.5	130	84.1	135	67	112	14.32	31	0
1923	77.9	71	86.3	94	69.6	45	12.35	45	0
1922	78.7	44	87.7	57	69.6	45	5.01	142	0
1921	79.7	26	88.5	42	70.8	14	7.11	122	0
1920	76.4	108	85.2	116	67.5	96	6.42	131	0
1919	78.7	44	87.8	54	69.5	48	9.83	78	0
1918	79.4	32	88.3	46	70.5	23	7.33	118	0
1917	75.9	120	84.6	124	67.2	107	5.78	138	0
1916	78.2	62	86.9	78	69.5	48	15.86	22	0
1915	72.9	153	81.2	153	64.7	146	27.22	1	0
1914	81.1	10	90.7	14	71.4	6	7.04	123	0
1913	80.8	12	90.4	15	71.2	8	6.75	126	0
1912	75.1	138	83.4	147	66.9	113	14.87	28	0
1911	78.1	64	86.9	78	69.4	51	5.49	139	0
1910	74.8	143	82.8	149	66.8	115	10.35	70	0
1909	77.7	76	86.1	99	69.4	51	10.63	64	0
1908	76.2	113	84.2	133	68.1	83	8.81	101	0
1907	75.6	128	83.7	144	67.5	96	12.64	42	0
1906	75.7	125	84	137	67.4	99	7.20	121	0
1905	76.4	108	84.9	123	67.9	85	9.72	81	0
1904	74.2	147	82.1	151	66.3	126	10.35	70	0
1903	75.9	120	83.9	139	67.9	85	14.36	29	0
1902	77	92	85.4	112	68.6	69	15.40	26	0
1901	82.6	1	92.7	4	72.5	3	6.15	135	0
1900	79.1	37	87.1	73	71	12	7.77	111	0
1899	79.1	37	87.5	60	70.7	20	9.63	85	0
1898	78.2	62	86.3	94	70.1	34	12.16	46	0
1897	77.5	80	86.3	94	68.7	64	9.21	95	0
1896	77.5	80	86.3	94	68.7	64	11.36	57	0
1895	77.1	91	85.7	105	68.5	74	11.80	50	0
1894	79	41	89.1	31	68.7	64	4.13	146	2
1893	77.2	89	86	101	68.4	77	6.63	128	0
1892	77.2	89	85.1	120	69.2	56	9.12	98	0
1891	75.1	138	83.8	140	66.5	121	10.22	73	0
1890	77.9	71	87.3	66	68.6	69	5.98	136	0
1889	74.7	144	83.4	147	65.9	135	7.59	113	0
1888	76.1	115	84.6	124	67.6	93	16.84	16	0
1887	80	22	88.4	43	71.6	5	6.42	131	0
1886	78.3	55	86.7	88	70	36	10.08	75	0
1885	77.4	83	85.2	116	69.7	42	13.22	37	0
1884	76	118	83.8	140	68.2	81	8.59	103	0
1883	75.2	135	84.5	127	65.9	135	12.69	41	0
1882	75.1	138	84.6	124	65.6	142	10.57	65	0
1881	80.7	13	91.2	10	70.2	30	5.18	141	0
1880	77.3	86	86.8	81	67.8	88	9.26	92	0
1879	76.8	100	86.4	92	67.1	109	8.24	106	0
1878	77.9	71	85.8	104	70	36	11.07	60	0
1877	76.1	115	84.5	127	67.7	90	14.18	33	0
1876	77	92	84.4	129	69.7	42	17.36	14	0
1875	74.2	147	82.2	150	66.2	129	23.00	3	0
1874	79.2	35	88	51	70.3	27	12.41	44	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1901	82.6
1936	82.3
1934	82.1
2012	82
2011	82
2010	81.7
1980	81.4
1954	81.4
2016	81.2
1914	81.1

Coldest
Year	Mean, °F
1915	72.9
1967	73.7
1927	73.7
1961	73.9
1950	73.9
1904	74.2
1875	74.2
1945	74.4
1974	74.6
1889	74.7

Wettest
Year	Precipitation, in
1915	27.22
2015	23.94
1875	23.00
1948	19.89
1981	19.84
2022	19.79
1982	19.14
1928	18.74
1946	18.65
1985	18.32

Driest
Year	Precipitation, in
1926	4.09
1894	4.13
1984	4.14
1953	4.21
1959	4.68
1922	5.01
1881	5.18
1941	5.23
1911	5.49
1917	5.78

The hottest, coldest and wettest days

Hottest day: 99°F; 31 August 2026
Coldest night: 56°F; 3 June 2026
Wettest day: 1.78 in; 8 June 2026

Every month, season and year

Months

Seasons

Years

St Louis, MO the day's answers

All-time records

Every answer in words

Summer 2026 brought 17.59 in of precipitation in St Louis, MO, the wettest summer since 2022, 11th wettest of 147.
The hottest day of summer 2026 in St Louis, MO: 99°F on Monday 31 August 2026.
The coldest night of summer 2026 in St Louis, MO: a low of 56°F on Wednesday 3 June 2026.
The wettest day of summer 2026 in St Louis, MO: 1.78 in on Monday 8 June 2026.