Sioux Falls, SD: Summer

31 August 2026: Summer 2026 averaged 73.6°F in Sioux Falls, SD, the warmest summer since 2023, tied 18th warmest of 132 (with 1901).

Summer 2026

Mean temperature: 73.6°F; Warmest since 2023; 18th warmest of 132
Precipitation: 5.65 in; Driest since 2012; 9th driest of 133

A normal summer in Sioux Falls, SD (1991 to 2020): a mean temperature of 71.5°F, between 68.6°F and 73.6°F in eight years of ten and 10.20 in of precipitation, between 6.81 in and 17.41 in in eight years of ten.

The mean temperature of every summer in Sioux Falls, SD since 1893: 73.6°F in 2026; the highest is 77.9°F, in 1936.

Normal range, 68.6 to 73.6°F

Every year, ranked, as a table

Every summer 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	73.6	18	84.5	35	62.7	9	5.65	125	0
2025	72	51	82.5	79	61.6	28	11.69	42	0
2024	71.6	63	82.2	87	61	36	14.56	15	0
2023	74.9	6	86.9	7	62.8	7	7.24	110	0
2022	74.4	10	85.6	19	63.2	3	11.23	44	0
2021	75.1	5	87	6	63.2	3	11.97	36	0
2020	75.5	3	86.8	10	64.2	2	6.86	113	0
2019	72	51	82.2	87	61.7	23	12.47	33	0
2018	72.2	42	82.3	83	62.1	18	17.56	3	0
2017	71.4	67	83.1	71	59.8	59	9.84	72	0
2016	72.7	32	83.7	57	61.7	23	6.36	117	0
2015	70.2	93	80.9	104	59.6	68	15.05	10	0
2014	69.6	101	79.4	120	59.8	59	19.45	2	0
2013	70.3	92	80.5	112	60.1	55	8.11	100	0
2012	75.3	4	88.3	5	62.3	13	2.73	133	0
2011	71.9	54	82.1	90	61.7	23	11.42	43	0
2010	71.8	56	81.8	93	61.9	20	22.64	1	0
2009	67.5	125	78	130	57	108	8.71	91	0
2008	71.5	66	83	75	60	56	8.38	94	0
2007	72.5	35	83.3	66	61.7	23	10.48	57	0
2006	72.1	46	83.9	53	60.3	49	8.82	88	0
2005	71.8	56	82.5	79	61.1	34	9.67	78	0
2004	66.9	130	78.1	128	55.8	122	10.98	47	0
2003	70.9	78	82.6	77	59.2	79	7.00	111	0
2002	73.5	20	84.6	34	62.3	13	12.63	31	0
2001	72.2	42	83	75	61.4	29	10.38	60	0
2000	69.7	99	80.9	104	58.5	90	9.65	79	0
1999	70.9	78	81.6	98	60.2	52	8.18	98	0
1998	68.7	114	79.1	121	58.3	91	10.47	58	0
1997	70	95	80.9	104	59.2	79	8.29	95	0
1996	69.3	107	81.1	103	57.4	103	3.91	130	0
1995	74	16	85.3	24	62.7	9	10.36	61	0
1994	70.6	85	81.5	100	59.6	68	10.39	59	0
1993	69.3	107	78.8	125	59.8	59	17.39	4	0
1992	66.2	131	76.4	131	56	120	16.14	7	0
1991	73.1	25	83.9	53	62.2	15	10.03	65	0
1990	71.4	67	83.1	71	59.7	64	7.80	107	0
1989	72.1	46	84.4	37	59.7	64	6.33	119	0
1988	76.2	2	89.5	3	62.8	7	5.42	127	0
1987	72.4	37	84.4	37	60.3	49	6.30	120	0
1986	70.4	90	81.8	93	59	84	9.29	83	0
1985	67.4	127	79.1	121	55.7	123	9.29	83	0
1984	72	51	83.3	66	60.6	42	10.82	50	0
1983	74.1	14	85.3	24	62.9	6	10.57	55	0
1982	69.5	102	80.8	109	58.2	95	11.01	45	0
1981	72.4	37	83.5	62	61.3	31	10.07	64	0
1980	71.4	67	83.2	69	59.5	72	6.72	116	0
1979	70.6	85	80.6	111	60.5	46	10.49	56	0
1978	69.5	102	80.9	104	58.2	95	10.78	51	0
1977	72.1	46	83.7	57	60.4	48	11.00	46	0
1976	74.5	9	89	4	59.9	57	3.86	131	0
1975	73	26	85.3	24	60.6	42	14.19	19	0
1974	70.9	78	84.3	41	57.6	101	9.22	85	0
1973	73.4	21	86	14	60.7	39	6.93	112	0
1972	69.1	110	80.8	109	57.4	103	8.23	97	0
1971	71.2	77	84	49	58.3	91	9.73	75	0
1970	71.6	63	84	49	59.2	79	7.32	109	0
1969	69.4	106	81.7	97	57.1	107	12.65	30	0
1968	71.4	67	84	49	58.7	87	8.17	99	0
1967	69.3	107	82.2	87	56.4	116	8.25	96	0
1966	72.1	46	84.3	41	59.8	59	6.34	118	0
1965	68.6	115	80.2	115	57	108	7.69	108	0
1964	71.9	54	84.4	37	59.3	76	9.58	81	0
1963	73.3	23	84.9	30	61.8	21	9.90	67	0
1962	69.9	96	80.5	112	59.3	76	12.25	34	0
1961	71.7	62	84.1	45	59.2	79	7.81	106	0
1960	70.8	82	82.3	83	59.3	76	9.86	70	0
1959	74.3	13	86.5	12	62.1	18	9.88	68	0
1958	69.8	97	82.3	83	57.3	105	5.61	126	0
1957	72.2	42	83.4	64	61	36	11.97	36	0
1956	72.2	42	84.8	33	59.6	68	14.97	11	0
1955	74.6	7	86.9	7	62.2	15	8.71	91	0
1954	72.4	37	84	49	60.8	38	10.13	63	0
1953	72.4	37	84.1	45	60.7	39	11.92	38	0
1952	71.4	67	84.5	35	58.3	91	9.37	82	0
1951	67.5	125	78.2	126	56.7	112	12.83	27	0
1950	67.3	128	80	117	54.6	128	6.82	115	0
1949	73.3	23	86	14	60.5	46	7.94	105	0
1948	70.9	78	82.3	83	59.6	68	14.30	17	0
1947	71.8	56	83.9	53	59.7	64	9.84	72	0
1946	69.7	99	81.5	100	58	98	9.81	74	0
1945	67.6	124	78.2	126	57	108	8.94	87	0
1944	68.6	115	79	124	58.3	91	16.76	6	0
1943	71.3	75	81.8	93	60.7	39	14.26	18	0
1942	70.2	93	81.8	93	58.7	87	12.78	28	1
1941	72.9	27	85.2	28	60.6	42	6.22	121	0
1940	71.8	56	83.5	62	60.2	52	11.91	39	0
1939	72.8	30	84.4	37	61.1	34	13.48	23	0
1938	74.6	7	86.6	11	62.7	9	8.77	89	0
1937	74.4	10	85.8	18	63.1	5	10.89	48	0
1936	77.9	1	91	1	64.9	1	5.83	123	0
1935	73.4	21	85.2	28	61.7	23	13.40	24	0
1934	71.8	56	83.9	53	59.7	64	15.66	9	0
1933	72.7	32	84.9	30	60.6	42	10.17	62	0
1932	71.8	56	83.3	66	60.3	49	14.01	21	0
1931	74.1	14	86.9	7	61.4	29	6.14	122	0
1930	72.5	35	85.3	24	59.8	59	6.83	114	0
1929	69.5	102	81.2	102	57.9	99	9.70	76	0
1928	69	111	80.2	115	57.8	100	14.48	16	0
1927	68.2	119	80	117	56.4	116	4.82	129	0
1926	71.4	67	83.7	57	59.1	83	9.88	68	0
1925	71.4	67	84.1	45	58.8	86	10.62	52	0
1924	68.8	113	80	117	57.6	101	8.10	101	0
1923	72.9	27	83.7	57	62.2	15	13.01	26	0
1922	72.1	46	84.9	30	59.5	72	10.62	52	1
1921	74.4	10	86.2	13	62.7	9	9.85	71	0
1920	70.7	83	82.6	77	58.7	87	9.69	77	0
1919	72.7	32	84.2	44	61.3	31	10.83	49	0
1918	70.7	83	82.4	81	58.9	85	11.89	40	0
1917	68.9	112	81.9	92	55.9	121	5.68	124	0
1916	71.3	75	83.1	71	59.5	72	8.02	103	0
1915	63.8	132	74.8	132	52.7	132	13.29	25	0
1914	71.4	67	83.4	64	59.4	75	11.70	41	0
1913	72.8	30	85.4	21	59.9	57	9.16	86	3
1912	68.4	117	80.9	104	55.6	124	12.73	29	5
1911	71.6	63	85.9	17	57.3	105	14.73	14	9
1910	72.9	27	85.5	20	60.2	52	8.00	104	0
1909	72.4	37	83.6	61	61.3	31	17.18	5	0
1908	68.4	117	80.3	114	56.5	113	14.87	13	1
1907							12.50	32	30
1906	69.5	102	82.4	81	56.5	113	13.87	22	0
1905	70.6	85	83.1	71	58.2	95	14.93	12	0
1904	67.7	122	82.1	90	53.4	130	9.61	80	4
1903	67.2	129	78.1	128	56.3	118	14.14	20	0
1902	67.7	122	79.1	121	56.2	119	10.59	54	0
1901	73.6	18	85.4	21	61.8	21	8.54	93	0
1900	70.6	85	86	14	55.3	127	15.82	8	0
1899									14
1898	70.4	90	84.3	41	56.5	113	10.02	66	0
1897	68.1	121	81.6	98	54.5	129	12.15	35	0
1896	69.8	97	84.1	45	55.5	126	8.76	90	0
1895	68.2	119	83.2	69	53.3	131	8.08	102	0
1894	74	16	91	1	57	108	3.55	132	0
1893	70.5	89	85.4	21	55.6	124	4.90	128	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1936	77.9
1988	76.2
2020	75.5
2012	75.3
2021	75.1
2023	74.9
1955	74.6
1938	74.6
1976	74.5
2022	74.4
More years share the last value

Coldest
Year	Mean, °F
1915	63.8
1992	66.2
2004	66.9
1903	67.2
1950	67.3
1985	67.4
2009	67.5
1951	67.5
1945	67.6
1904	67.7
More years share the last value

Wettest
Year	Precipitation, in
2010	22.64
2014	19.45
2018	17.56
1993	17.39
1909	17.18
1944	16.76
1992	16.14
1900	15.82
1934	15.66
2015	15.05

Driest
Year	Precipitation, in
2012	2.73
1894	3.55
1976	3.86
1996	3.91
1927	4.82
1893	4.90
1988	5.42
1958	5.61
2026	5.65
1917	5.68

The hottest, coldest and wettest days

Hottest day: 98°F; 30 August 2026
Coldest night: 46°F; 15 June 2026
Wettest day: 1.81 in; 1 July 2026

Every month, season and year

Months

Seasons

Years

Sioux Falls, SD the day's answers

All-time records

Every answer in words

Summer 2026 brought 5.65 in of precipitation in Sioux Falls, SD, the driest summer since 2012, 9th driest of 133.
The hottest day of summer 2026 in Sioux Falls, SD: 98°F on Sunday 30 August 2026.
The coldest night of summer 2026 in Sioux Falls, SD: a low of 46°F on Monday 15 June 2026.
The wettest day of summer 2026 in Sioux Falls, SD: 1.81 in on Wednesday 1 July 2026.