All-time weather records — Warsaw, IL

Record high
113.0°F
July 15, 1936
Record low
-22.0°F
January 10, 1982
Wettest day
5.38 in
August 23, 2001

Climate change signal in Warsaw

11.2%

of Warsaw's all-time daily heat records were set in the last decade (41 of 366 records since 2015).

8.2%

of all-time daily cold records were set in the last decade (30 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
·
·
1900s
·
·
1910s
·
·
1920s
·
·
1930s
85
25
1940s
13
12
1950s
42
40
1960s
24
49
1970s
21
58
1980s
45
60
1990s
25
48
2000s
39
28
2010s
44
35
2020s
28
11

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 1933, the latest in 2026. Period of observation: 1891-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 21, 1957 -22.0°F — Jan 10, 1982 3.45 in — Jan 2, 1965
February 78.1°F — Feb 28, 2024 -18.9°F — Feb 4, 2014 3.20 in — Feb 21, 1997
March 88.0°F — Mar 22, 2026 -11.0°F — Mar 6, 1960 4.68 in — Mar 4, 1985
April 91.9°F — Apr 25, 1986 10.9°F — Apr 3, 2018 5.18 in — Apr 18, 2013
May 102.0°F — May 31, 1934 33.1°F — May 3, 1976 4.61 in — May 27, 1973
June 104.0°F — Jun 19, 1936 44.1°F — Jun 5, 1993 4.70 in — Jun 25, 1968
July 113.0°F — Jul 15, 1936 50.0°F — Jul 14, 1967 3.90 in — Jul 9, 2003
August 109.9°F — Aug 9, 1934 44.1°F — Aug 28, 1986 5.38 in — Aug 23, 2001
September 102.0°F — Sep 2, 2011 30.0°F — Sep 23, 1992 4.82 in — Sep 14, 1961
October 93.9°F — Oct 4, 1997 1.9°F — Oct 12, 1954 4.20 in — Oct 3, 1986
November 82.0°F — Nov 1, 1950 -2.9°F — Nov 30, 1964 3.24 in — Nov 30, 2006
December 73.0°F — Dec 4, 2012 -20.0°F — Dec 24, 1989 3.54 in — Dec 10, 2003

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