Sioux Falls, SD: 2026

9 October 2026: 2026 so far averaged 54°F in Sioux Falls, SD, the warmest 1 January to 9 October since 2024, 7th warmest of 132.

2026 so far, to 9 October 2026

Mean temperature: 54°F; Warmest since 2024; 7th warmest of 132
Precipitation: 18.90 in; Driest since 2025; 31st driest of 132

A normal 1 January to 9 October in Sioux Falls, SD (1991 to 2020): a mean temperature of 50.4°F, between 48°F and 53°F in eight years of ten and 24.10 in of precipitation, between 17.50 in and 34.27 in in eight years of ten.

The mean temperature of every 1 January to 9 October in Sioux Falls, SD since 1893: 54°F in 2026; the highest is 55.7°F, in 2012.

Normal range, 48 to 53°F

Every year, ranked, as a table

Every 1 January 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	54	7	65.9	7	42.1	11	18.90	102	0
2025	52.6	21	64.7	13	40.6	30	18.06	109	0
2024	54.3	6	65.5	9	43.1	3	26.91	29	0
2023	53	12	64.4	17	41.6	17	15.14	122	0
2022	52.3	27	64.2	20	40.3	37	21.21	82	0
2021	53.9	8	64.9	11	43	4	23.79	56	0
2020	53	12	64	22	42.1	11	13.64	128	0
2019	49.6	89	59.2	112	39.9	46	36.10	2	0
2018	50	72	59.8	105	40.2	39	36.43	1	0
2017	52.9	15	63.4	27	42.5	8	24.34	51	0
2016	53	12	63.4	27	42.6	7	28.43	17	0
2015	51.6	33	62.5	50	40.6	30	24.84	47	0
2014	48	111	59	113	37	104	26.93	28	0
2013	49.4	94	59.5	108	39.4	54	21.43	81	0
2012	55.7	1	68.4	1	43	4	14.82	124	0
2011	48.9	101	59.3	109	38.6	74	23.47	60	0
2010	50.1	70	60.3	94	40	43	35.36	3	0
2009	49.1	98	59.9	103	38.3	82	17.80	112	0
2008	48.7	103	59.8	105	37.6	97	20.79	87	0
2007	51.8	32	62.4	52	41.2	22	26.40	33	0
2006	53.1	11	63.8	25	42.5	8	23.53	59	0
2005	52.4	24	63.2	34	41.5	20	27.63	24	0
2004	49.9	74	61	78	38.7	71	29.69	13	0
2003	50	72	61.7	64	38.2	84	19.23	99	0
2002	51.4	40	63	39	39.8	49	23.03	65	0
2001	49.5	91	60	99	39	64	24.91	46	0
2000	51.2	42	63.2	34	39.2	58	21.98	74	0
1999	50.6	55	61.4	69	39.8	49	21.67	76	0
1998	51.2	42	61.3	72	41	23	25.45	39	0
1997	47.6	116	58.6	119	36.5	110	18.54	105	0
1996	47.5	118	58.7	117	36.2	116	14.63	125	0
1995	50.9	49	60.9	81	40.9	25	28.36	18	0
1994	49.7	82	60.7	88	38.6	74	19.60	96	0
1993	47.5	118	57.3	127	37.7	94	34.15	4	0
1992	50.9	49	61.3	72	40.5	34	30.08	9	0
1991	52.8	17	63.9	24	41.6	17	23.85	55	0
1990	52.8	17	64.9	11	40.7	28	17.46	114	0
1989	49.9	74	62	59	37.7	94	14.53	126	0
1988	51.5	37	64	22	38.9	68	16.77	116	0
1987	54.6	4	66.9	2	42.3	10	15.29	121	0
1986	50.5	57	60.9	81	40.1	40	28.77	16	0
1985	49.7	82	60.8	84	38.5	76	24.15	53	0
1984	49.7	82	60	99	39.4	54	25.20	42	0
1983	51.6	33	61.6	66	41.6	17	22.39	71	0
1982	48	111	58.6	119	37.5	98	27.71	23	0
1981	53.3	9	65.6	8	41	23	14.83	123	0
1980	50.5	57	62.2	56	38.9	68	12.15	130	0
1979	46.3	126	56.5	132	36.1	118	27.21	25	0
1978	46.8	122	57.4	125	36.2	116	22.13	73	0
1977	51.6	33	62.7	47	40.6	30	27.87	21	0
1976	52.7	19	66	6	39.5	52	10.38	131	0
1975	49.2	96	60.4	90	37.9	91	23.17	64	0
1974	49.7	82	62.3	53	37.1	103	16.35	118	0
1973	52.1	29	62.8	44	41.3	21	25.51	37	0
1972	47.2	121	58.7	117	35.6	123	22.21	72	0
1971	48.9	101	60.8	84	37	104	18.15	108	0
1970	48.3	107	59.9	103	36.6	109	23.57	58	0
1969	47.8	114	59.3	109	36.3	114	23.62	57	0
1968	50.2	66	62.7	47	37.8	93	21.10	83	0
1967	49.1	98	61.9	62	36.4	111	15.40	120	0
1966	48.4	106	60.4	90	36.4	111	18.77	104	0
1965	46	129	57	130	34.9	125	26.03	35	0
1964	51.2	42	63.4	27	39	64	21.53	79	0
1963	51.5	37	63.1	37	40	43	18.85	103	0
1962	48.5	104	58.8	116	38.2	84	29.99	10	0
1961	49.7	82	61.1	77	38.4	78	18.28	107	0
1960	47.6	116	58.5	121	36.7	108	24.56	49	0
1959	50.2	66	61.7	64	38.7	71	24.82	48	0
1958	50.9	49	63	39	38.7	71	13.86	127	0
1957	49.4	94	60.4	90	38.4	78	25.41	40	0
1956	48.3	107	60.8	84	35.7	122	21.01	84	0
1955	52.3	27	64.6	14	40	43	16.09	119	0
1954	50.2	66	61.4	69	39.1	63	22.70	68	0
1953	50.3	63	61.6	66	39	64	26.69	30	0
1952	49.7	82	61.4	69	38	89	18.03	110	0
1951	46.8	122	57.4	125	36.1	118	27.90	20	0
1950	45.4	131	57.1	129	33.7	128	20.67	88	0
1949	49.5	91	61.2	75	37.9	91	19.75	93	0
1948	49.9	74	61.5	68	38.4	78	25.09	44	0
1947	49.8	77	61	78	38.5	76	19.62	95	0
1946	51.1	46	62.7	47	39.5	52	24.17	52	0
1945	49.8	77	60.4	90	39.2	58	21.53	79	0
1944	49.8	77	59.8	105	39.8	49	30.35	7	0
1943	49.8	77	60.8	84	38	89	20.48	90	5
1942	50.5	57	61.3	72	39.9	46	27.04	26	1
1941	52.5	22	63	39	41.9	14	19.45	97	0
1940	49.6	89	60	99	39.2	58	22.79	67	1
1939	53.2	10	64.6	14	41.9	14	24.53	50	0
1938	54.4	5	65	10	43.8	2	26.55	31	0
1937	50.7	54	61.2	75	40.3	37	25.39	41	0
1936	50.9	49	62.8	44	39	64	22.67	69	0
1935	52.4	24	62.9	42	41.8	16	29.84	12	0
1934	52.5	22	64.3	19	40.7	28	21.88	75	0
1933	51.5	37	62.5	50	40.4	36	19.86	92	0
1932	49.8	77	60.3	94	39.3	57	25.06	45	0
1931	54.8	3	66.8	3	42.8	6	13.00	129	0
1930	51.1	46	62.3	53	39.9	46	20.14	91	0
1929	48.1	110	58.9	115	37.3	101	31.00	6	0
1928	51.1	46	62.1	57	40.1	40	22.56	70	0
1927	50.8	53	60.9	81	40.6	30	21.59	78	0
1926	51.9	31	63.3	32	40.5	34	20.84	86	0
1925	52.7	19	64.6	14	40.8	26	17.64	113	0
1924	49.1	98	60.1	97	38.2	84	17.81	111	0
1923	52.1	29	63.4	27	40.8	26	27.97	19	0
1922	51.6	33	63.2	34	40.1	40	19.35	98	1
1921	55.5	2	66.7	4	44.2	1	21.63	77	0
1920	50.1	70	61	78	39.2	58	27.04	26	3
1919	52.4	24	62.9	42	42	13	23.22	63	0
1918	48.5	104	60.7	88	36.3	114	20.56	89	0
1917	45.5	130	57.3	127	33.7	128	18.33	106	0
1916	47.5	118	59	113	36	121	20.97	85	0
1915	46.5	124	56.9	131	36.1	118	25.59	36	0
1914	50.2	66	62.3	53	38.1	88	24.11	54	0
1913	50.3	63	63.1	37	37.5	98	23.41	62	5
1912	46.1	127	58.4	122	34.2	127	23.47	60	5
1911	51.2	42	64.2	20	38.2	84	29.42	14	9
1910	52.9	15	66.6	5	39.2	58	16.50	117	0
1909	50.4	60	61.8	63	38.9	68	31.37	5	0
1908	51.4	40	63.3	32	39.4	54	29.09	15	2
1907							19.72	94	30
1906	50.6	55	62.8	44	38.4	78	27.85	22	0
1905	49.7	82	62	59	37.3	101	30.25	8	0
1904	46.5	124	60.3	94	33.1	130	17.13	115	5
1903	48	111	58.4	122	37.7	94	29.89	11	0
1902	49.2	96	60.1	97	38.3	82	23.03	65	0
1901									31
1900	50.3	63	63.8	25	36.9	106	26.41	32	0
1899	43.9	132	57.7	124	30.1	132	25.12	43	14
1898	50.4	60	63.4	27	37.4	100	25.50	38	0
1897	47.7	115	60	99	35.3	124			0
1896	49.5	91	62.1	57	36.9	106	26.31	34	0
1895	48.2	109	62	59	34.5	126	19.17	100	0
1894	50.4	60	64.4	17	36.4	111	9.52	132	0
1893	46.1	127	59.3	109	32.9	131	19.09	101	9

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2012	55.7
1921	55.5
1931	54.8
1987	54.6
1938	54.4
2024	54.3
2026	54
2021	53.9
1981	53.3
1939	53.2

Coldest
Year	Mean, °F
1899	43.9
1950	45.4
1917	45.5
1965	46
1912	46.1
1893	46.1
1979	46.3
1915	46.5
1904	46.5
1978	46.8
More years share the last value

Wettest
Year	Precipitation, in
2018	36.43
2019	36.10
2010	35.36
1993	34.15
1909	31.37
1929	31.00
1944	30.35
1905	30.25
1992	30.08
1962	29.99

Driest
Year	Precipitation, in
1894	9.52
1976	10.38
1980	12.15
1931	13.00
2020	13.64
1958	13.86
1989	14.53
1996	14.63
2012	14.82
1981	14.83

The hottest, coldest and wettest days

Hottest day: 99°F; 4 September 2026
Coldest night: -19°F; 23 January 2026
Wettest day: 1.81 in; 1 July 2026

Month by month

Month	Mean temperature	Precipitation
January	17.3°F 58th warmest of 133	0.17 in 25th driest of 134
February	31.2°F 8th warmest of 134	0.03 in 4th driest of 134
March	39.3°F 16th warmest of 133	0.69 in 30th driest of 133
April	47.6°F 59th warmest of 134	2.37 in 67th wettest of 134
May	59.2°F 50th warmest of 134	4.20 in 49th wettest of 134
June	69.9°F 45th warmest of 132	1.74 in 17th driest of 134
July	77.1°F 19th warmest of 134	2.70 in 64th driest of 134
August	73.6°F 25th warmest of 132	1.21 in 19th driest of 133
September	67.5°F 8th warmest of 134	5.79 in 8th wettest of 133
October so far	59.7°F 21st warmest of 133	a trace 9th driest of 133

Hot days and freezes

Sioux Falls, SD has had 27 days at 90°F or above in 2026 through 9 October, the most by that date since 2023, tied 52nd most of 132 (with 1898).
Sioux Falls, SD has had 97 freezing nights (a low of 32°F or below) in 2026 through 9 October, the most by that date since 2023, tied 88th most of 132 (with 2009, 1991, 1985 and 1 other year).
The last freeze of spring 2026 in Sioux Falls, SD came on Wednesday 20 May 2026, the latest since 2002, tied 16th latest of 132 (with 2002, 1969, 1967 and 1 other year).

Daily records set

Date	Record	Value	Before	Check
21 March	Warmest day	89°F	83°F 1910	Provisional
20 March	Warmest day	78°F	73°F 2022, 2015, 1911	Provisional
8 March	Warmest day	73°F	69°F 2020	Provisional
13 February	Warmest day	60°F	59°F 1921	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Sioux Falls, SD the day's answers

All-time records

Every answer in words

2026 so far brought 18.90 in of precipitation in Sioux Falls, SD, the driest 1 January to 9 October since 2025, 31st driest of 132.
The hottest day of 2026 so far in Sioux Falls, SD: 99°F on Friday 4 September 2026.
The coldest night of 2026 so far in Sioux Falls, SD: a low of -19°F on Friday 23 January 2026.
The wettest day of 2026 so far in Sioux Falls, SD: 1.81 in on Wednesday 1 July 2026.