Sioux Falls, SD: Fall

9 October 2026: Fall 2026 so far averaged 65.7°F in Sioux Falls, SD, the warmest 1 September to 9 October since 2025, 9th warmest of 133.

Fall 2026 so far, to 9 October 2026

Mean temperature: 65.7°F; Warmest since 2025; 9th warmest of 133
Precipitation: 5.79 in; Wettest since 2019; 19th wettest of 132

A normal 1 September to 9 October in Sioux Falls, SD (1991 to 2020): a mean temperature of 60.2°F, between 57.6°F and 64.3°F in eight years of ten and 3.81 in of precipitation, between 1.13 in and 6.36 in in eight years of ten.

The mean temperature of every 1 September to 9 October in Sioux Falls, SD since 1894: 65.7°F in 2026; the highest is 67.8°F, in 2023.

Normal range, 57.6 to 64.3°F

Every year, ranked, as a table

Every 1 September to 9 October 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	65.7	9	75.5	32	55.9	1	5.79	19	0
2025	66.6	3	79.9	5	53.2	10	0.23	131	0
2024	66.3	5	80.5	3	52.2	23	0.04	132	0
2023	67.8	1	80.5	3	55	4	1.26	113	0
2022	64.8	14	78	10	51.6	26	2.03	99	0
2021	66.5	4	78.8	8	54.2	7	3.38	57	0
2020	61.8	44	75.1	35	48.6	56	0.42	129	0
2019	64.3	21	73.6	58	55	4	6.26	15	0
2018	60.7	58	68.8	119	52.6	15	9.45	4	0
2017	63.2	28	73.7	56	52.7	13	6.75	10	0
2016	63.1	29	73.7	56	52.5	17	10.57	1	0
2015	64.4	20	74.3	43	54.6	6	3.24	62	0
2014	59.7	69	70.2	100	49.2	47	2.50	82	0
2013	64.6	18	76.2	23	53.1	11	1.01	120	0
2012	59.3	83	75	37	43.5	129	1.14	118	0
2011	61.5	48	74.2	48	48.8	53	0.68	125	0
2010	59.2	85	70.6	91	47.7	71	4.48	37	0
2009	59.3	83	69.6	106	48.9	50	3.67	53	0
2008	61.3	50	74.2	48	48.4	61	4.25	41	0
2007	63.4	26	76	28	50.8	33	4.65	33	0
2006	59.1	87	70.3	96	48	66	3.95	47	0
2005	64.6	18	76.6	22	52.6	15	6.32	14	0
2004	62.8	33	74.2	48	51.3	29	5.67	22	0
2003	59.5	77	72.9	70	46	99	4.74	31	0
2002	59.6	73	71.4	81	47.8	70	4.44	38	0
2001	59.4	79	71.2	82	47.6	73	2.71	75	0
2000	57.2	120	70.6	91	43.7	127	1.87	103	0
1999	57.6	112	71.1	85	44.1	123	1.19	116	0
1998	62.4	39	75.2	34	49.6	43	4.24	42	0
1997	62.6	35	75.8	31	49.3	45	2.21	93	0
1996	57.6	112	68.3	121	46.8	87	2.93	70	0
1995	58.6	95	69.6	106	47.5	76	3.04	66	0
1994	62.6	35	73.3	64	51.9	24	2.81	72	0
1993	55.8	126	67.4	126	44.2	121	2.34	86	0
1992	59.2	85	71.2	82	47.2	81	5.26	24	0
1991	59.4	79	71.6	76	47.3	80	3.99	46	0
1990	63.6	25	77.2	15	49.9	42	1.77	105	0
1989	57.1	122	69.5	108	44.8	113	3.38	57	0
1988	58.8	89	71.7	75	45.9	101	4.39	40	0
1987	59.6	73	73.2	66	45.9	101	2.05	98	0
1986	57.6	112	67	127	48.1	64	9.64	3	0
1985	54.9	132	63.6	132	46.2	94	3.52	55	0
1984	57.3	118	69.8	103	44.8	113	2.34	86	0
1983	61.7	46	74.7	40	48.7	54	1.93	102	0
1982	58.8	89	68.6	120	48.9	50	8.05	8	0
1981	60.3	62	73.9	53	46.7	88	1.26	113	0
1980	60.5	59	74.9	39	46.1	97	0.79	124	0
1979	61.3	50	73.9	53	48.7	54	4.05	45	0
1978	62.7	34	74.7	40	50.7	34	2.54	79	0
1977	58.1	104	68.1	123	48	66	6.91	9	0
1976	60.5	59	76.7	21	44.3	120	0.86	122	0
1975	57.3	118	70.4	94	44.2	121	1.35	112	0
1974	55.2	131	71.1	85	39.3	133	0.61	126	0
1973	59.7	69	70.3	96	49.1	48	10.15	2	0
1972	58.1	104	71.6	76	44.6	117	2.45	83	0
1971	59.8	65	72.9	70	46.7	88	3.89	50	0
1970	59.6	73	72.2	73	47	85	5.17	25	0
1969	60.4	61	73.4	62	47.5	76	3.02	67	0
1968	58.5	97	70.6	91	46.4	91	4.87	28	0
1967	59.7	69	73.2	66	46.2	94	1.20	115	0
1966	58.7	92	70.7	89	46.6	90	6.55	12	0
1965	52.3	133	62.1	133	42.5	130	4.91	27	0
1964	56.7	125	68.3	121	45.1	109	4.09	43	0
1963	63.8	22	77.4	13	50.2	40	3.11	65	0
1962	59	88	70.4	94	47.5	76	3.91	49	0
1961	58.2	100	70.3	96	46.2	94	2.45	83	0
1960	61.4	49	73.4	62	49.5	44	2.21	93	0
1959	58.2	100	69.4	111	46.9	86	5.69	21	0
1958	62.3	41	76.1	26	48.5	58	2.12	97	0
1957	58.7	92	69.7	105	47.7	71	3.18	64	0
1956	59.8	65	75.9	30	43.7	127	0.29	130	0
1955	62.2	42	75.1	35	49.3	45	1.52	110	0
1954	59.4	79	69.8	103	49.1	48	4.69	32	0
1953	60.2	63	75	37	45.5	106	2.51	80	0
1952	59.9	64	74.4	42	45.4	107	0.47	128	0
1951	55.8	126	67.6	124	44	125	3.87	51	0
1950	58.5	97	71.2	82	45.8	103	5.55	23	0
1949	57.5	116	70.3	96	44.7	115	4.62	36	0
1948	63.7	24	76.2	23	51.3	29	3.78	52	0
1947	63	30	76	28	50	41	3.32	59	0
1946	58.8	89	70.1	101	47.6	73	8.98	6	0
1945	58.2	100	69.1	117	47.4	79	2.25	88	0
1944	57.5	116	66.6	129	48.5	58	2.22	91	0
1943	57.8	108	69.9	102	45.6	105	0.55	127	0
1942	57.8	108	67.6	124	48	66	2.64	76	0
1941	62.2	42	73.5	59	50.9	32	3.31	61	0
1940	63.8	22	74.3	43	53.3	9	2.25	88	0
1939	64.8	14	77	17	52.5	17	2.20	95	0
1938	66.2	6	76.8	19	55.5	2	5.90	18	0
1937	63.3	27	74.2	48	52.5	17	2.22	91	0
1936	65.6	10	77.7	11	53.5	8	1.12	119	0
1935	60.8	57	73.1	69	48.5	58	1.80	104	0
1934	57.8	108	69.5	108	46.1	97	3.95	47	0
1933	62.4	39	73.5	59	51.3	29	3.56	54	0
1932	57.6	112	69.3	112	46	99	2.60	77	0
1931	66.2	6	77.3	14	55.2	3	4.76	30	0
1930	60.9	56	71.5	78	50.3	38	4.77	29	0
1929	57.2	120	66.5	130	47.9	69	9.23	5	0
1928	59.8	65	72	74	47.6	73	2.97	68	0
1927	61.2	54	71.1	85	51.4	28	2.55	78	0
1926	59.8	65	69.3	112	50.4	36	6.62	11	0
1925	62.6	35	73.5	59	51.6	26	1.57	109	0
1924	58.2	100	69.2	116	47.2	81	2.79	73	0
1923	63	30	73.2	66	52.7	13	6.21	17	0
1922	65.3	12	77.7	11	53	12	2.15	96	0
1921	61.8	44	73.3	64	50.4	36	1.97	101	0
1920	65.3	12	78.1	9	52.5	17	2.23	90	0
1919	64.8	14	77	17	52.5	17	1.99	100	0
1918	58.1	104	71.5	78	44.7	115	1.16	117	0
1917	58	107	71	88	45.1	109	1.58	108	0
1916	58.7	92	72.4	72	45	112	2.36	85	0
1915	55.8	126	66.4	131	45.1	109	4.63	35	0
1914	61.2	54	73.8	55	48.6	56	5.02	26	0
1913	62.6	35	76.8	19	48.3	63	1.70	106	0
1912	56.8	124	69.3	112	44.4	119	3.40	56	0
1911	59.4	79	70.7	89	48.1	64	8.53	7	0
1910	64.7	17	79.1	6	50.3	38	2.78	74	0
1909	63	30	77.2	15	48.9	50	3.20	63	0
1908	66.2	6	81.8	2	50.6	35	1.62	107	0
1907	58.6	95	71.5	78	45.7	104	2.51	80	0
1906	61.3	50	74.3	43	48.4	61	5.73	20	0
1905	65.4	11	78.9	7	51.8	25	4.64	34	0
1904	61.6	47	76.1	26	47.2	81	1.48	111	0
1903	57.8	108	69.3	112	46.4	91	4.40	39	0
1902	55.5	130	66.9	128	44.1	123	3.32	59	0
1901	58.3	99	69.5	108	47.1	84	6.46	13	0
1900	59.6	73	74	52	45.2	108	4.06	44	0
1899	56.9	123	74.3	43	39.4	132	0.82	123	0
1898	59.7	69	75.5	32	43.8	126	2.84	71	0
1897	67.4	2	82.3	1	52.4	22			0
1896	55.7	129	69	118	42.4	131	6.23	16	0
1895	61.3	50	76.2	23	46.4	91	2.97	68	0
1894	59.5	77	74.3	43	44.6	117	0.96	121	0
1893									9

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2023	67.8
1897	67.4
2025	66.6
2021	66.5
2024	66.3
1938	66.2
1931	66.2
1908	66.2
2026	65.7
1936	65.6

Coldest
Year	Mean, °F
1965	52.3
1985	54.9
1974	55.2
1902	55.5
1896	55.7
1993	55.8
1951	55.8
1915	55.8
1964	56.7
1912	56.8

Wettest
Year	Precipitation, in
2016	10.57
1973	10.15
1986	9.64
2018	9.45
1929	9.23
1946	8.98
1911	8.53
1982	8.05
1977	6.91
2017	6.75

Driest
Year	Precipitation, in
2024	0.04
2025	0.23
1956	0.29
2020	0.42
1952	0.47
1943	0.55
1974	0.61
2011	0.68
1980	0.79
1899	0.82

The hottest, coldest and wettest days

Hottest day: 99°F; 4 September 2026
Coldest night: 40°F; 4 October 2026, 2 October 2026
Wettest day: 0.90 in; 18 September 2026

Every month, season and year

Months

Seasons

Years

Sioux Falls, SD the day's answers

All-time records

Every answer in words

Fall 2026 so far brought 5.79 in of precipitation in Sioux Falls, SD, the wettest 1 September to 9 October since 2019, 19th wettest of 132.
The hottest day of fall 2026 so far in Sioux Falls, SD: 99°F on Friday 4 September 2026.
The coldest night of fall 2026 so far in Sioux Falls, SD: a low of 40°F on Sunday 4 October 2026 and Friday 2 October 2026.
The wettest day of fall 2026 so far in Sioux Falls, SD: 0.90 in on Friday 18 September 2026.