Sioux Falls, SD: May

31 May 2026: May 2026 averaged 59.2°F in Sioux Falls, SD, the warmest May since 2024, tied 50th warmest of 134 (with 2021, 2000 and 1940).

May 2026

Mean temperature: 59.2°F; Warmest since 2024; 50th warmest of 134
Precipitation: 4.20 in; Wettest since 2024; 49th wettest of 134

A normal May in Sioux Falls, SD (1991 to 2020): a mean temperature of 57.7°F, between 55.2°F and 62.4°F in eight years of ten and 3.29 in of precipitation, between 1.76 in and 6.65 in in eight years of ten.

The mean temperature of every May in Sioux Falls, SD since 1893: 59.2°F in 2026; the highest is 70.4°F, in 1934.

Normal range, 55.2 to 62.4°F

Every year, ranked, as a table

Every May in Sioux Falls, SD from 1893 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	59.2	50	72.9	33	45.6	76	4.20	49	0
2025	59	56	71.8	51	46.1	67	2.20	93	0
2024	60.4	34	72.9	33	47.9	40	4.64	38	0
2023	65.5	5	78.5	4	52.5	7	1.28	121	0
2022	60.1	36	71.5	57	48.8	28	4.30	48	0
2021	59.2	50	70	72	48.4	34	2.04	98	0
2020	57.9	72	67.4	106	48.5	32	2.17	94	0
2019	55.2	114	65.5	128	44.9	92	6.62	12	0
2018	64	11	75.9	16	52.1	12	2.48	84	0
2017	57.6	82	69.5	79	45.6	76	3.23	66	0
2016	58.9	58	71	60	46.8	57	3.11	69	0
2015	57.7	77	68.4	96	47	55	4.00	53	0
2014	57.7	77	70.2	70	45.3	82	2.11	97	0
2013	57.2	85	67.3	107	47	55	6.95	11	0
2012	61.7	27	73.6	27	49.8	25	4.60	39	0
2011	56.5	97	67.3	107	45.7	74	5.42	24	0
2010	56.7	95	68.6	94	44.9	92	2.03	99	0
2009	58.6	63	71.4	58	45.9	73	1.43	115	0
2008	56.4	98	67.5	104	45.2	85	3.34	60	0
2007	62.4	20	74	25	50.7	17	2.63	77	0
2006	59.5	41	71.7	54	47.4	47	1.02	126	0
2005	56.3	102	67.3	107	45.3	82	5.22	26	0
2004	57.7	77	69.4	84	46.1	67	8.10	4	0
2003	55.5	110	67.3	107	43.7	104	2.64	76	0
2002	54	125	67.2	111	40.9	127	1.82	107	0
2001	59.1	54	70.3	68	47.9	40	1.92	104	0
2000	59.2	50	71.6	56	46.7	59	5.56	22	0
1999	58.5	64	69.2	87	47.8	42	6.20	15	0
1998	61.7	27	74.1	23	49.3	26	1.92	104	0
1997	51.5	133	64	132	38.9	133	3.58	58	0
1996	54.9	119	64.2	131	45.5	78	5.27	25	0
1995	55.6	109	65.8	124	45.5	78	4.76	34	0
1994	63.9	12	76.7	12	51	15	1.26	122	0
1993	57.1	87	68	100	46.2	65	8.26	3	0
1992	60.4	34	73.5	30	47.4	47	1.80	109	0
1991	62.4	20	72.4	45	52.5	7	6.20	15	0
1990	56.4	98	67.7	103	45.1	88	4.07	52	0
1989	58	69	71.8	51	44.2	98	1.42	116	0
1988	65	8	77.9	7	52.2	10	1.54	113	0
1987	64.8	9	76.6	13	53.1	5	2.94	72	0
1986	58.8	60	70	72	47.5	46	2.42	86	0
1985	62.7	19	75	20	50.3	21	3.29	63	0
1984	55.9	107	68.1	99	43.7	104	2.95	71	0
1983	55	117	66.8	115	43.3	112	2.92	73	0
1982	59.5	41	69.1	89	50	22	4.72	36	0
1981	58.3	67	71.3	59	45.2	85	0.61	131	0
1980	58.4	66	71.8	51	45	91	2.52	80	0
1979	55.2	114	66.8	115	43.6	107	4.90	29	0
1978	57.7	77	69	90	46.4	62	3.47	59	0
1977	66.8	3	77.4	10	56.1	1	3.17	67	0
1976	57	90	72.5	39	41.6	120	1.02	126	0
1975	61.1	31	75.1	19	47.1	53	1.66	112	0
1974	55.7	108	67.1	112	44.3	96	3.11	69	0
1973	56.8	93	69.5	79	44.2	98	1.93	102	0
1972	59.1	54	69.6	76	48.6	31	7.25	9	0
1971	55.3	113	69	90	41.5	121	1.06	125	0
1970	59.9	39	72.5	39	47.2	50	4.83	33	0
1969	59.6	40	72.4	45	46.7	59	2.43	85	0
1968	52.6	131	65.6	126	39.6	132	2.69	75	0
1967	53.1	129	66.1	123	40.1	129	0.72	130	0
1966	54.3	124	68.7	93	39.9	130	1.94	101	0
1965	59	56	70.9	63	47.1	53	7.29	7	0
1964	61.6	29	75.9	16	47.3	49	1.29	120	0
1963	59.4	46	70.6	66	48.2	36	2.00	100	0
1962	63	14	73.6	27	52.4	9	6.07	17	0
1961	55	117	65.8	124	44.2	98	4.67	37	0
1960	58	69	70.8	64	45.1	88	5.08	27	0
1959	58.7	61	69.2	87	48.2	36	7.28	8	0
1958	61.8	24	76.4	15	47.2	50	0.81	128	0
1957	56	106	66.2	120	45.7	74	4.89	31	0
1956	60	37	72.4	45	47.7	43	1.31	119	0
1955	63.4	13	77.9	7	48.9	27	2.16	95	0
1954	52.7	130	65.6	126	39.8	131	1.84	106	0
1953	57	90	68.6	94	45.3	82	2.71	74	0
1952	57.5	83	69.5	79	45.5	78	1.93	102	0
1951	58.7	61	69.8	75	47.6	45	4.37	45	0
1950	54.7	120	66.5	118	42.8	115	4.33	47	0
1949	61.9	23	73.8	26	50	22	2.42	86	0
1948	57.8	75	69.6	76	46	72	2.56	79	0
1947	53.6	127	66.5	118	40.7	128	1.42	116	0
1946	54.4	122	66.9	114	41.8	119	2.29	90	0
1945	53.6	127	66.2	120	41	125	4.85	32	0
1944	62.9	15	74.4	22	51.5	14	4.35	46	0
1943	56.3	102	69.3	86	43.4	111	3.63	57	0
1942	54.4	122	65	130	43.7	104	7.18	10	0
1941	65.3	6	77.5	9	53	6	1.71	111	0
1940	59.2	50	73.2	32	45.2	85	0.39	133	0
1939	67.4	2	80	2	54.7	3	4.19	50	0
1938	59.3	48	69.9	74	48.7	30	4.75	35	0
1937	62.9	15	74.1	23	51.8	13	3.96	54	0
1936	65.9	4	78.4	5	53.5	4	9.03	2	0
1935	55.1	116	65.1	129	45.1	88	6.07	17	0
1934	70.4	1	85	1	55.9	2	0.10	134	0
1933	57.1	87	68	100	46.2	65	1.80	109	0
1932	60.8	32	72.8	37	48.8	28	3.33	61	0
1931	56.8	93	70.3	68	43.3	112	0.75	129	0
1930	57.3	84	68.4	96	46.1	67	4.41	42	0
1929	56.1	105	68.2	98	44.1	101	3.68	55	0
1928	62.9	15	75.8	18	49.9	24	2.31	88	0
1927	56.4	98	66.7	117	46.1	67	5.51	23	0
1926	65.2	7	78.3	6	52.2	10	3.16	68	0
1925	58	69	72.5	39	43.6	107	1.47	114	0
1924	54.5	121	67	113	42	118	1.35	118	0
1923	60.8	32	73.5	30	48.2	36	3.64	56	0
1922	62.1	22	73.6	27	50.6	18	2.15	96	0
1921	61.8	24	72.9	33	50.6	18	4.40	43	0
1920	59.4	46	70.7	65	48	39	6.22	14	0
1919	57.8	75	69.4	84	46.3	64	2.28	91	0
1918	59.5	41	72.5	39	46.4	62	4.11	51	0
1917	53.7	126	66.2	120	41.3	123	2.51	82	0
1916	56.4	98	68.8	92	43.9	103	4.53	41	0
1915	52.6	131	62.9	134	42.2	117	3.29	63	0
1914	59.5	41	71.7	54	47.2	50	4.40	43	0
1913	56.3	102	67.5	104	44.8	94	5.75	19	2
1912	59.3	48	71.9	50	46.6	61	3.26	65	0
1911	62.8	18	77	11	48.5	32	1.11	124	0
1910	56.6	96	72.1	48	41	125	2.23	92	0
1909	58.5	64	72.9	33	44.1	101	4.90	29	0
1908	57.9	72	69.6	76	46.1	67	7.75	5	0
1907	51.1	134	63.9	133	38.3	134	2.52	80	0
1906	59.5	41	72.1	48	46.8	57	4.56	40	0
1905	55.4	111	68	100	42.8	115	6.41	13	0
1904	57.9	72	72.5	39	43.3	112	2.31	88	1
1903	58.9	58	70.2	70	47.7	43	7.43	6	0
1902	61.8	24	72.8	37	50.8	16	5.57	21	0
1901	58.2	68	71	60	45.4	81	1.82	107	0
1900	64.5	10	78.6	3	50.5	20	2.50	83	0
1899	57.1	87	70.6	66	43.6	107	5.63	20	0
1898	57.2	85	69.5	79	44.8	94	9.42	1	0
1897	57	90	72.5	39	41.5	121	1.25	123	0
1896	61.5	30	74.8	21	48.3	35	2.59	78	0
1895	57.7	77	71	60	44.3	96	3.33	61	0
1894	60	37	76.5	14	43.5	110	0.48	132	0
1893	55.4	111	69.5	79	41.2	124	5.00	28	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	70.4
1939	67.4
1977	66.8
1936	65.9
2023	65.5
1941	65.3
1926	65.2
1988	65
1987	64.8
1900	64.5

Coldest
Year	Mean, °F
1907	51.1
1997	51.5
1968	52.6
1915	52.6
1954	52.7
1967	53.1
1947	53.6
1945	53.6
1917	53.7
2002	54

Wettest
Year	Precipitation, in
1898	9.42
1936	9.03
1993	8.26
2004	8.10
1908	7.75
1903	7.43
1965	7.29
1959	7.28
1972	7.25
1942	7.18

Driest
Year	Precipitation, in
1934	0.10
1940	0.39
1894	0.48
1981	0.61
1967	0.72
1931	0.75
1958	0.81
2006	1.02
1976	1.02
1971	1.06

The hottest, coldest and wettest days

Hottest day: 91°F; 27 May 2026
Coldest night: 25°F; 6 May 2026
Wettest day: 1.69 in; 24 May 2026

Every month, season and year

Months

Seasons

Years

Sioux Falls, SD the day's answers

All-time records

Every answer in words

May 2026 brought 4.20 in of precipitation in Sioux Falls, SD, the wettest May since 2024, 49th wettest of 134.
The hottest day of May 2026 in Sioux Falls, SD: 91°F on Wednesday 27 May 2026.
The coldest night of May 2026 in Sioux Falls, SD: a low of 25°F on Wednesday 6 May 2026.
The wettest day of May 2026 in Sioux Falls, SD: 1.69 in on Sunday 24 May 2026.