All-time weather records — De Soto, IL

Record high
107.1°F
June 29, 2012
Record low
-11.0°F
December 25, 2004
Wettest day
5.85 in
March 18, 2008

Climate change signal in De Soto

32%

of De Soto's all-time daily heat records were set in the last decade (117 of 366 records since 2015).

31.4%

of all-time daily cold records were set in the last decade (115 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 #
1990s
29
20
2000s
122
145
2010s
139
133
2020s
76
68

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 1998, the latest in 2026. Period of observation: 1998-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 29, 2002 -6.0°F — Jan 24, 2003 2.06 in — Jan 12, 2013
February 79.0°F — Feb 27, 2024 -6.9°F — Feb 19, 2015 2.04 in — Feb 15, 2025
March 86.0°F — Mar 21, 2026 -2.7°F — Mar 6, 2015 5.85 in — Mar 18, 2008
April 88.0°F — Apr 30, 2007 23.2°F — Apr 8, 2007 4.77 in — Apr 29, 2017
May 95.0°F — May 26, 2012 33.1°F — May 9, 2020 2.18 in — May 1, 2011
June 107.1°F — Jun 29, 2012 44.1°F — Jun 1, 2003 4.18 in — Jun 16, 2000
July 107.1°F — Jul 5, 2012 51.1°F — Jul 28, 2013 4.26 in — Jul 6, 2016
August 104.0°F — Aug 4, 2010 45.0°F — Aug 26, 2025 3.29 in — Aug 4, 2012
September 99.0°F — Sep 4, 1999 33.1°F — Sep 30, 2022 3.27 in — Sep 25, 2011
October 95.0°F — Oct 2, 2019 22.1°F — Oct 20, 2022 3.70 in — Oct 26, 2019
November 82.0°F — Nov 1, 2016 9.1°F — Nov 12, 2019 3.85 in — Nov 15, 2005
December 75.0°F — Dec 2, 2021 -11.0°F — Dec 25, 2004 2.73 in — Dec 9, 1999

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