Sioux Falls, SD

4 October 2026: 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).

Sunday 4 October 2026

High: 71°F; Warmest since 2025; 46th warmest of 133
Low: 40°F; Coldest since 2024; 42nd coldest of 133

No measurable precipitation in Sioux Falls, SD for 5 days to Sunday 4 October 2026.

Every 4 October low in Sioux Falls, SD since 1894: 40°F in 2026; the lowest is 22°F, in 1968 and 1952.

Normal range, 31.9 to 55°F

Every year as a table

Every 4 October high in Sioux Falls, SD since 1894: 71°F in 2026; the highest is 92°F, in 1905.

Year	High, °F	Low, °F
2026	71	40
2025	91	68
2024	73	35
2023	69	54
2022	64	57
2021	83	45
2020	65	28
2019	57	43
2018	44	32
2017	65	39
2016	65	55
2015	61	47
2014	48	29
2013	63	47
2012	51	36
2011	86	59
2010	65	41
2009	54	38
2008	75	46
2007	79	55
2006	64	42
2005	64	55
2004	53	31
2003	76	40
2002	56	36
2001	56	39
2000	50	40
1999	69	33
1998	58	47
1997	81	46
1996	70	46
1995	68	52
1994	56	50
1993	63	41
1992	77	49
1991	51	34
1990	74	46
1989	55	30
1988	50	28
1987	88	42
1986	59	37
1985	55	40
1984	70	40
1983	64	42
1982	72	50
1981	58	52
1980	63	28
1979	58	33
1978	61	34
1977	64	42
1976	66	43
1975	83	47
1974	74	45
1973	65	35
1972	75	37
1971	74	37
1970	78	45
1969	70	45
1968	62	22
1967	78	45
1966	59	34
1965	67	44
1964	53	38
1963	81	51
1962	73	44
1961	78	39
1960	75	48
1959	67	36
1958	75	43
1957	72	50
1956	72	35
1955	65	60
1954	52	41
1953	68	28
1952	54	22
1951	63	48
1950	53	25
1949	68	34
1948	68	46
1947	84	44
1946	67	44
1945	70	51
1944	63	49
1943	70	43
1942	60	46
1941	61	48
1940	71	60
1939	73	43
1938	84	56
1937	72	55
1936	69	57
1935	51	23
1934	72	55
1933	62	41
1932	50	32
1931	77	48
1930	68	55
1929	60	45
1928	71	42
1927	70	40
1926	67	50
1925	58	43
1924	72	44
1923	68	46
1922	89	62
1921	68	33
1920	76	49
1919	60	47
1918	74	61
1917	67	44
1916	60	45
1915	49	41
1914	72	50
1913	65	55
1912	80	45
1911	69	50
1910	78	39
1909	84	50
1908	76	45
1907	72	35
1906	62	32
1905	92	42
1904	77	46
1903	71	44
1902	59	30
1901	65	32
1900	83	58
1899	69	28
1898	48	41
1897	83	62
1896	61	45
1895	68	44
1894	51	34

The forecast

Date	High	Low
6 October	83°FRecord 88°F, 2007	56°FRecord 21°F, 1898
7 October	Record 88°F, 1980	Record 17°F, 1974

The month and the year

Every year's 1 to 4 October in Sioux Falls, SD, ranked by its mean temperature: October 2026 so far is the 63rd warmest of 133.

Every year, ranked, as a table

Rank	Year	Mean, °F
1	2023	75.1
2	2025	75
3	1897	72.4
4	1938	70.9
5	1922	70.3
6	2005	68.3
7	2022	66.6
8	1997	66.3
9	1900	66
10	2011	65.4
11	1909	65.3
12	1967	65.1
13	2006	65
13	1914	65
15	1951	64.8
16	2021	64.1
16	1910	64.1
18	1992	63.5
18	1931	63.5
20	1976	62.9
20	1905	62.9
22	1963	62.8
23	1940	62.5
24	1913	62.3
25	1928	62.1
26	1957	61.6
26	1939	61.6
28	2007	61.5
29	2016	61.3
30	1904	60.9
31	1919	60.8
32	1953	60.6
33	1969	60.1
33	1937	60.1
35	1924	59.9
36	1916	59.8
37	1956	59.6
37	1942	59.6
39	1990	59.5
40	1946	59.4
41	1949	59
42	2001	58.9
42	1934	58.9
42	1926	58.9
42	1903	58.9
46	1955	58.8
47	1983	58.6
48	2013	58.5
49	2017	58.4
50	1972	58.3
51	1930	58
52	1917	57.6
53	2024	57.5
54	1971	57.4
55	1936	57.3
55	1923	57.3
55	1920	57.3
55	1912	57.3
59	1932	57.1
60	1975	56.8
60	1947	56.8
60	1906	56.8
63	2026	56.6
64	1970	56.5
64	1962	56.5
64	1908	56.5
67	1941	56.4
68	1895	56.3
69	1898	56
70	1995	55.8
70	1982	55.8
70	1960	55.8
73	2008	55.6
73	1984	55.6
73	1907	55.6
76	1958	55.4
77	1943	55.3
78	1945	55.1
79	1896	55
80	1948	54.9
80	1933	54.9
80	1918	54.9
83	1899	54.6
84	1991	54.4
85	1911	54.3
86	1964	54.1
86	1915	54.1
88	1929	54
89	1987	53.9
90	1994	53.8
90	1978	53.8
92	2012	53.6
93	1973	53.3
93	1927	53.3
95	2015	53
95	2000	53
97	1965	52.4
98	2010	52
98	1979	52
100	1961	51.8
101	1993	51.4
101	1986	51.4
103	1921	51
104	2018	50.9
105	1925	50.8
106	1996	50.6
107	1901	50.3
108	2014	50.1
108	1966	50.1
108	1954	50.1
111	1981	49.5
112	1974	49.4
113	2002	49.3
114	2003	49.1
115	2019	48.9
116	1952	48.4
117	2009	48.3
117	1977	48.3
119	1968	48
120	1988	47.9
121	2004	47.6
121	1944	47.6
121	1935	47.6
124	1980	46.9
125	1989	46.8
126	1998	46.5
127	1902	45.8
128	1959	45.6
128	1894	45.6
130	2020	45.5
131	1985	44.9
132	1999	40.4
133	1950	38.9

Every day as a table

Daily highs and lows in Sioux Falls, SD, 1 to 4 October 2026, with each date's record range and its 1991 to 2020 normal range.

Day	High, °F	Low, °F	Record high	Year	Record low	Year	Normal high	Normal low
1 October 2026	68	47	95	2023	23	1974	71.5	45
2 October 2026	65	40	93	2023	21	1974	63.5	43
3 October 2026	71	51	91	2025	25	1987	63.5	42
4 October 2026	71	40	92	1905	22	1968	63.5	41.5

The warmest, coldest and wettest on this date

The 20 warmest 4 October highs in Sioux Falls, SD since 1894.
Rank	Year	High, °F
1	1905	92
2	2025	91
3	1922	89
4	1987	88
5	2011	86
6	1947	84
6	1938	84
6	1909	84
9	2021	83
9	1975	83
9	1900	83
9	1897	83
13	1997	81
13	1963	81
15	1912	80
16	2007	79
17	1970	78
17	1967	78
17	1961	78
17	1910	78

The 20 coldest 4 October lows in Sioux Falls, SD since 1894.
Rank	Year	Low, °F
1	1968	22
1	1952	22
3	1935	23
4	1950	25
5	2020	28
5	1988	28
5	1980	28
5	1953	28
5	1899	28
10	2014	29
11	1989	30
11	1902	30
13	2004	31
14	2018	32
14	1932	32
14	1906	32
14	1901	32
18	1999	33
18	1979	33
18	1921	33

The 20 wettest 4 October days in Sioux Falls, SD since 1894.
Rank	Year	Precipitation, in
1	2016	2.53
2	1998	2.36
3	2005	1.54
4	1946	1.46
5	1941	1.35
6	2002	1.13
7	1896	0.50
8	1969	0.36
9	2007	0.30
9	1910	0.30
11	2018	0.27
12	1939	0.18
13	1898	0.17
14	2019	0.14
15	1995	0.11
15	1951	0.11
17	1915	0.10
18	1985	0.09
18	1916	0.09
20	1936	0.07

Every answer in words

Sunday 4 October 2026: a high of 71°F in Sioux Falls, SD, the warmest 4 October since 2025, tied 46th warmest of 133 (with 1940, 1928 and 1903).
Sunday 4 October 2026: a low of 40°F in Sioux Falls, SD, the coldest 4 October night since 2024, tied 42nd coldest of 133 (with 2003, 2000, 1985 and 2 other years).
Forecast for Tuesday 6 October 2026: a high of 83°F in Sioux Falls, SD, which would be the warmest 6 October since 2020, 9th warmest of 133 (National Weather Service forecast).
Forecast for Tuesday 6 October 2026: a low of 56°F in Sioux Falls, SD, which would be the warmest 6 October night since 2011, 10th warmest of 133 (National Weather Service forecast).
Sioux Falls, SD on 6 October: record high 88°F (2007), record low 21°F (1898).
Sioux Falls, SD on 7 October: record high 88°F (1980), record low 17°F (1974).
October 2026 so far averaged 56.6°F in Sioux Falls, SD, the warmest 1 to 4 October since 2025, 63rd warmest of 133.
October 2026 so far brought a trace of precipitation in Sioux Falls, SD, the driest 1 to 4 October since 2025, tied 38th driest of 133 (with 2020, 2015, 2012 and 22 other years).
Fall 2026 so far averaged 66.3°F in Sioux Falls, SD, the warmest 1 September to 4 October since 2025, 13th warmest of 133.
Fall 2026 so far brought 5.79 in of precipitation in Sioux Falls, SD, the wettest 1 September to 4 October since 2019, tied 13th wettest of 132 (with 1923).
2026 so far averaged 53.8°F in Sioux Falls, SD, the warmest 1 January to 4 October since 2024, 7th warmest of 132.
2026 so far brought 18.90 in of precipitation in Sioux Falls, SD, the driest 1 January to 4 October since 2025, 33rd driest of 132.
The 30 days to Sunday 4 October 2026 brought 5.75 in of precipitation in Sioux Falls, SD, the driest 30 days to 4 October since 2025, 120th driest of 132.
The 60 days to Sunday 4 October 2026 brought 6.98 in of precipitation in Sioux Falls, SD, the driest 60 days to 4 October since 2025, 93rd driest of 132.
The 90 days to Sunday 4 October 2026 brought 7.35 in of precipitation in Sioux Falls, SD, the driest 90 days to 4 October since 2024, 51st driest of 132.
Sioux Falls, SD has had 27 days at 90°F or above in 2026 through 4 October, the most by that date since 2023, tied 51st most of 132 (with 1963 and 1898).
Sioux Falls, SD has had 97 freezing nights (a low of 32°F or below) in 2026 through 4 October, the most by that date since 2023, 87th most of 132.

Nearby

Mitchell, SD 65.6 mi
Spencer, IA 82.5 mi
Sioux City, IA 84.1 mi
Huron, SD 91.7 mi
Norfolk, NE 115.6 mi
Minnehaha County, SD county average
South Dakota every city and county

All-time records

About these figures

Daily records for Sioux Falls, SD run from 1893 to 4 October 2026, with 155 days missing; current station SIOUX FALLS FOSS FIELD.

Our calculation from NOAA records for Sioux Falls, SD, 1893 to 2026. Preliminary until NOAA's final data.