Sioux Falls, SD: records

4 October 2026: The hottest day on record in Sioux Falls, SD: 110°F on Tuesday 21 June 1988 and Friday 17 July 1936.

The record begins: 1893

All-time records

Hottest day: 110°F; 21 June 1988, 17 July 1936
Coldest night: -42°F; 9 February 1899
Wettest day: 5.44 in; 7 August 2022
Warmest night: 81°F; 22 August 2023, 14 August 1938, 12 July 1936
Coldest day: -23°F; 8 February 1899

Daily records by decade

New daily records set in Sioux Falls, SD by decade since the 1920s: the most record highs, 105, came in the 1930s; the most record lows, 51, in the 1950s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1890s	0	0	7
1900s	0	0	10
1910s	0	0	10
1920s	38	41	10
1930s	105	38	10
1940s	49	36	10
1950s	60	51	10
1960s	43	43	10
1970s	30	41	10
1980s	50	21	10
1990s	28	18	10
2000s	23	7	10
2010s	23	9	10
2020s	40	3	7

Records by month

Month	Highest	Lowest	Wettest day
January	66°F 24 January 1981	-38°F 12 January 1912	1.59 in 1 January 1960
February	70°F 26 February 2024, 22 February 1982, 17 February 1981 and 1 more	-42°F 9 February 1899	1.62 in 19 February 1952
March	89°F 21 March 2026	-23°F 11 March 1948	3.27 in 31 March 2007
April	98°F 28 April 1910	4°F 3 April 1936	3.72 in 22 April 2001
May	104°F 30 May 1934	17°F 4 May 1967	4.22 in 29 May 2004
June	110°F 21 June 1988	32°F 7 June 1901, 7 June 1897	4.26 in 16 June 1957
July	110°F 17 July 1936	34°F 9 July 1895	3.35 in 1 July 1992
August	109°F 24 August 1936	34°F 20 August 1950, 29 August 1893	5.44 in 7 August 2022
September	104°F 6 September 1976, 6 September 1922, 6 September 1913 and 2 more	13°F 29 September 1899	4.02 in 11 September 1966
October	95°F 1 October 2023	-5°F 29 October 1925	4.54 in 9 October 1973
November	82°F 6 November 2020	-17°F 30 November 1964, 14 November 1959	1.92 in 23 November 2001
December	63°F 3 December 1998, 2 December 1998, 1 December 1998	-31°F 29 December 1917	1.41 in 3 December 1955

Streaks, months and years

Longest heat streak	19 days	17 June to 5 July 1910	A high of 90°F or above
Longest cold streak	66 days	18 December 1977 to 21 February 1978	A high of 32°F or below
Wettest month	13.70 in	June 2014
Driest month	0.00 in	November 1914
Wettest year	39.54 in	2019
Driest year	10.53 in	1894

Every record in words

The coldest night on record in Sioux Falls, SD: a low of -42°F on Thursday 9 February 1899.
The wettest day on record in Sioux Falls, SD: 5.44 in on Sunday 7 August 2022.
The warmest night on record in Sioux Falls, SD: a low of 81°F on Tuesday 22 August 2023, Sunday 14 August 1938 and Sunday 12 July 1936.
The coldest day on record in Sioux Falls, SD: a high of -23°F on Wednesday 8 February 1899.
The longest run of days with a high of 90°F or above in Sioux Falls, SD: 19 days, from Friday 17 June to Tuesday 5 July 1910.
The longest run of days with a high of 32°F or below in Sioux Falls, SD: 66 days, from Sunday 18 December 1977 to Tuesday 21 February 1978.
The wettest month on record in Sioux Falls, SD: June 2014, with 13.70 in of precipitation.
The driest month on record in Sioux Falls, SD: November 1914, with 0.00 in of precipitation.
The wettest year on record in Sioux Falls, SD: 2019, with 39.54 in of precipitation.
The driest year on record in Sioux Falls, SD: 1894, with 10.53 in of precipitation.

Sioux Falls, SD the day's answers