All-time weather records — Sioux Center, IA

Record high
109.0°F
July 17, 1936
Record low
-36.9°F
January 12, 1912
Wettest day
7.05 in
August 5, 2023

Climate change signal in Sioux Center

13.4%

of Sioux Center's all-time daily heat records were set in the last decade (49 of 366 records since 2015).

3.3%

of all-time daily cold records were set in the last decade (12 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1890s
1
1
1900s
4
42
1910s
12
45
1920s
26
38
1930s
67
33
1940s
·
·
1950s
23
14
1960s
18
49
1970s
23
41
1980s
41
37
1990s
23
29
2000s
43
15
2010s
42
14
2020s
43
8

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1899, the latest in 2026. Period of observation: 1899-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 26, 2002 -36.9°F — Jan 12, 1912 1.22 in — Jan 31, 1926
February 75.0°F — Feb 22, 1908 -33.0°F — Feb 2, 1917 1.20 in — Feb 1, 1922
March 90.0°F — Mar 22, 2026 -18.9°F — Mar 5, 1960 2.61 in — Mar 23, 1987
April 95.0°F — Apr 29, 2007 -0.9°F — Apr 3, 1975 3.92 in — Apr 22, 1985
May 105.1°F — May 30, 1934 17.1°F — May 3, 1967 4.60 in — May 27, 2013
June 105.1°F — Jun 21, 1988 33.1°F — Jun 5, 1983 4.28 in — Jun 22, 1974
July 109.0°F — Jul 17, 1936 37.9°F — Jul 5, 1972 6.53 in — Jul 15, 1900
August 109.0°F — Aug 3, 1930 37.0°F — Aug 28, 1986 7.05 in — Aug 5, 2023
September 102.0°F — Sep 2, 1925 21.0°F — Sep 26, 1984 5.98 in — Sep 17, 1926
October 91.9°F — Oct 1, 2023 -2.0°F — Oct 30, 1925 2.82 in — Oct 6, 1903
November 79.0°F — Nov 8, 1999 -20.0°F — Nov 14, 1959 2.39 in — Nov 10, 1998
December 66.0°F — Dec 1, 1998 -32.1°F — Dec 29, 1917 1.39 in — Dec 13, 2022

Click a month to see every daily record for that month in Sioux Center.