St Louis, MO: May

31 May 2026: May 2026 averaged 66.6°F in St Louis, MO, the warmest May since 2024, tied 70th warmest of 153 (with 1928 and 1895).

May 2026

Mean temperature: 66.6°F; Warmest since 2024; 70th warmest of 153
Precipitation: 4.21 in; Wettest since 2024; 64th wettest of 146

A normal May in St Louis, MO (1991 to 2020): a mean temperature of 67.1°F, between 64.5°F and 71.4°F in eight years of ten and 4.21 in of precipitation, between 1.72 in and 8.00 in in eight years of ten.

The mean temperature of every May in St Louis, MO since 1874: 66.6°F in 2026; the highest is 75.4°F, in 2018.

Normal range, 64.5 to 71.4°F

Every year, ranked, as a table

Every May 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	66.6	70	76	78	57.2	66	4.21	64	0
2025	66.4	76	75.2	89	57.5	60	3.91	74	0
2024	71.9	7	81.3	10	62.5	7	6.04	27	0
2023	69.8	21	80.6	17	59	35	1.61	133	0
2022	69.2	30	78.3	42	60.2	23	6.23	24	0
2021	65.3	92	74.8	94	55.8	91	2.86	102	0
2020	64.8	101	73.6	105	55.9	90	5.47	37	0
2019	67.8	53	77	59	58.7	42	7.49	16	0
2018	75.4	1	85.1	1	65.7	1	5.05	43	0
2017	68.7	39	78.6	36	58.7	42	6.00	28	0
2016	66.4	76	75.9	80	56.9	74	4.67	51	0
2015	69.6	23	78.5	37	60.7	18	3.62	82	0
2014	69.4	26	79.2	28	59.7	28	3.98	68	0
2013	67.2	60	76.4	73	58	53	7.13	18	0
2012	73.2	2	83.7	2	62.7	5	1.70	131	0
2011	66.4	76	75.7	83	57.1	71	4.16	65	0
2010	68	51	77.2	56	58.9	36	4.64	53	0
2009	66.9	66	76.2	75	57.7	56	4.72	49	0
2008	63.1	125	72.4	128	53.9	119	10.84	3	0
2007	70.9	14	80.1	22	61.6	14	4.26	63	0
2006	66.2	82	75.5	84	56.9	74	2.88	100	0
2005	66.5	73	77.5	52	55.5	99	0.78	145	0
2004	70.8	16	79.4	27	62.2	11	9.75	5	0
2003	65	96	74.1	100	56	89	3.97	69	0
2002	63.5	116	73.2	111	53.9	119	7.81	13	0
2001	68.6	42	78.4	40	58.9	36	2.81	103	0
2000	68.9	35	78.3	42	59.6	29	5.84	32	0
1999	66.8	69	76.9	63	56.7	77	2.20	121	0
1998	71.2	11	80	23	62.4	9	3.62	82	0
1997	61.6	140	71.8	137	51.5	139	3.05	96	0
1996	68.6	42	77.7	49	59.5	32	4.34	59	0
1995	64.6	102	72.2	131	57.1	71	12.92	1	0
1994	65	96	75	91	54.9	107	1.72	130	0
1993	66.4	76	74.9	92	57.8	55	3.94	72	0
1992	65	96	74.6	96	55.5	99	1.45	138	0
1991	73	3	81.7	7	64.3	2	3.87	76	0
1990	63.5	116	72.1	132	55	106	9.59	6	0
1989	64.3	106	74.6	96	53.9	119	4.11	66	0
1988	68.9	35	80.7	16	57.2	66	1.44	139	0
1987	72.6	5	82.7	3	62.5	7	2.00	127	0
1986	68.1	50	77.5	52	58.8	39	2.42	117	0
1985	67.5	55	77.6	51	57.5	60	3.30	88	0
1984	63.2	124	73.8	103	52.6	131	5.19	41	0
1983	62.3	133	72	135	52.6	131	6.32	22	0
1982	70.7	17	80.9	11	60.5	20	4.85	45	0
1981	60.7	146	70	145	51.3	141	6.79	19	0
1980	66.9	66	77.4	55	56.4	85	3.40	87	0
1979	65.5	90	77.1	57	53.8	122	1.62	132	0
1978	63.5	116	73	116	54.1	118	3.69	81	0
1977	71	13	82.5	5	59.6	29	2.13	123	0
1976	60.8	144	72.6	123	49	152	3.90	75	0
1975	67.5	55	78.5	37	56.6	81	3.23	90	0
1974	65	96	75.4	86	54.5	111	5.90	30	0
1973	61.7	138	72.5	126	50.9	145	3.92	73	0
1972	66.4	76	78.9	34	53.8	122	1.02	143	0
1971	62.3	133	73.5	106	51	142	5.66	34	0
1970	69.2	30	80.8	15	57.7	56	2.04	126	0
1969	65.6	89	76.9	63	54.4	112	2.11	124	0
1968	61.9	137	72	135	51.7	138	6.78	20	0
1967	60.8	144	70.6	143	50.9	145	4.73	48	0
1966	61.7	138	72.7	119	50.6	148	4.59	55	0
1965	70.5	18	81.4	9	59.6	29	1.38	140	0
1964	69.6	23	80.3	20	58.9	36	2.68	109	0
1963	63.8	111	74.3	99	53.4	128	4.77	47	0
1962	72	6	82.7	3	61.4	15	2.44	115	0
1961	58.3	153	69.5	147	47	153	7.25	17	0
1960	62.7	131	72.5	126	52.8	130	4.72	49	0
1959	69.6	23	79.2	28	59.9	26	3.56	85	0
1958	66.1	85	76.5	71	55.6	95	2.73	105	0
1957	66.2	82	76.2	75	56.2	86	6.70	21	0
1956	67.8	53	78.4	40	57.2	66	4.84	46	0
1955	68.3	47	78.5	37	58	53	2.45	114	0
1954	61.6	140	72.7	119	50.5	149	2.50	113	0
1953	67.2	60	77.9	47	56.5	83	1.77	129	0
1952	65.8	88	76.6	69	55.1	105	1.18	142	0
1951	67.5	55	79.2	28	55.7	93	2.57	112	0
1950	67	64	76.8	67	57.2	66	3.13	93	0
1949	68.8	37	79.2	28	58.3	49	5.40	38	0
1948	64	110	74.4	98	53.6	126	2.44	115	0
1947	63.1	125	73.9	101	52.2	136	3.23	90	0
1946	62	136	71.1	140	53	129	5.14	42	0
1945	60.2	149	69.9	146	50.5	149	2.71	107	0
1944	70.1	20	80.3	20	59.9	26	4.46	58	0
1943	64.1	107	72.8	117	55.4	101	11.20	2	0
1942	64.6	102	74.9	92	54.3	114	3.97	69	0
1941	69	33	80.4	19	57.6	58	2.32	118	0
1940	62.4	132	73.4	110	51.5	139	2.27	119	0
1939	68.6	42	79	33	58.2	51	1.97	128	0
1938	65.2	93	74.7	95	55.7	93	4.27	62	0
1937	66.4	76	76.6	69	56.2	86	4.08	67	0
1936	69.8	21	80.9	11	58.8	39			0
1935	60.5	148	68.5	151	52.4	135			0
1934	69.1	32	81.6	8	56.5	83			0
1933	66.5	73	75.5	84	57.4	63			0
1932	66.5	73	77.9	47	55.2	103			0
1931	61.4	142	72.1	132	50.8	147			0
1930	66	86	76.3	74	55.6	95			0
1929	62.3	133	70.7	141	53.8	122	10.09	4	0
1928	66.6	70	76	78	57.2	66	2.18	122	0
1927	64.5	105	72.4	128	56.6	81	9.21	7	0
1926	68.5	45	78.2	44	58.7	42	1.58	135	0
1925	63.3	123	73.1	114	53.5	127	1.48	137	0
1924	59.4	151	67.7	153	51	142	6.18	26	0
1923	64.1	107	72.6	123	55.6	95	5.85	31	0
1922	69.4	26	77.7	49	61.1	16	1.26	141	0
1921	68.5	45	76.9	63	60.1	24	4.29	60	0
1920	64.9	100	72.7	119	57	73	5.00	44	0
1919	63	128	70.7	141	55.2	103	7.86	11	0
1918	70.9	14	79.8	25	61.9	12	3.28	89	0
1917	60.7	146	69.2	149	52.1	137	3.78	79	0
1916	67.9	52	77.1	57	58.8	39	3.00	98	0
1915	64.6	102	73.1	114	56.2	86	7.67	15	0
1914	69.4	26	79.5	26	59.4	34	0.69	146	0
1913	67.3	58	77	59	57.6	58	1.53	136	0
1912	68.3	47	77	59	59.5	32	4.29	60	0
1911	71.3	10	80.9	11	61.7	13	2.26	120	0
1910	60.9	143	69.2	149	52.5	134	5.23	40	0
1909	63.5	116	72.1	132	54.9	107	5.99	29	0
1908	66.9	66	75.3	87	58.5	47	7.72	14	0
1907	58.9	152	68	152	49.8	151	5.57	35	0
1906	67	64	76.8	67	57.3	64	2.61	111	0
1905	67.1	62	76.2	75	58.1	52	4.67	51	0
1904	65.1	95	73.5	106	56.7	77	2.88	100	0
1903	69	33	77	59	61	17	2.08	125	0
1902	71.8	8	80.9	11	62.6	6	3.04	97	0
1901	66.2	82	75.2	89	57.3	64	2.69	108	0
1900	68.8	37	77.5	52	60.1	24	4.47	57	0
1899	68.7	39	76.9	63	60.5	20	6.32	22	0
1898	67.1	62	75.9	80	58.3	49	8.55	9	0
1897	63.5	116	72.3	130	54.7	110	1.59	134	0
1896	73	3	82	6	63.9	3	9.12	8	0
1895	66.6	70	76.5	71	56.7	77	3.16	92	2
1894	66	86	75.3	87	56.8	76	3.61	84	2
1893	63.7	114	72.7	119	54.9	107	6.19	25	2
1892	62.9	129	70.4	144	55.3	102	7.87	10	0
1891	63.5	116	72.8	117	54.3	114	2.73	105	0
1890	63.8	111	73.5	106	54.2	117	5.81	33	0
1889	63.8	111	73.2	111	54.4	112	3.80	78	0
1888	63.1	125	72.6	123	53.7	125	3.81	77	0
1887	71.1	12	78.8	35	63.3	4	5.27	39	0
1886	69.4	26	78.1	45	60.6	19	7.84	12	0
1885	65.5	90	73.5	106	57.5	60	2.80	104	0
1884	65.2	93	73.7	104	56.7	77	2.68	109	0
1883	62.9	129	73.2	111	52.6	131	2.89	99	0
1882	60.2	149	69.5	147	51	142	4.55	56	0
1881	71.4	9	80.6	17	62.3	10	3.96	71	0
1880	70.2	19	80	23	60.4	22	3.44	86	0
1879	68.7	39	79.1	32	58.4	48	0.95	144	0
1878	63.5	116	71.2	139	55.8	91	4.63	54	0
1877	63.6	115	71.5	138	55.6	95	3.11	95	0
1876	67.3	58	75.9	80	58.6	46	3.13	93	0
1875	64.1	107	73.9	101	54.3	114	5.48	36	0
1874	68.2	49	78	46	58.7	42	3.70	80	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2018	75.4
2012	73.2
1991	73
1896	73
1987	72.6
1962	72
2024	71.9
1902	71.8
1881	71.4
1911	71.3

Coldest
Year	Mean, °F
1961	58.3
1907	58.9
1924	59.4
1945	60.2
1882	60.2
1935	60.5
1981	60.7
1917	60.7
1976	60.8
1967	60.8

Wettest
Year	Precipitation, in
1995	12.92
1943	11.20
2008	10.84
1929	10.09
2004	9.75
1990	9.59
1927	9.21
1896	9.12
1898	8.55
1892	7.87

Driest
Year	Precipitation, in
1914	0.69
2005	0.78
1879	0.95
1972	1.02
1952	1.18
1922	1.26
1965	1.38
1988	1.44
1992	1.45
1925	1.48

The hottest, coldest and wettest days

Hottest day: 87°F; 17 May 2026
Coldest night: 42°F; 7 May 2026
Wettest day: 2.51 in; 18 May 2026

Every month, season and year

Months

Seasons

Years

St Louis, MO the day's answers

All-time records

Every answer in words

May 2026 brought 4.21 in of precipitation in St Louis, MO, the wettest May since 2024, 64th wettest of 146.
The hottest day of May 2026 in St Louis, MO: 87°F on Sunday 17 May 2026.
The coldest night of May 2026 in St Louis, MO: a low of 42°F on Thursday 7 May 2026.
The wettest day of May 2026 in St Louis, MO: 2.51 in on Monday 18 May 2026.