All-time weather records — Wilmington, OH

Record high
99.0°F
June 28, 2012
Record low
-14.1°F
February 24, 2015
Wettest day
4.65 in
July 27, 2002

Climate change signal in Wilmington

34.4%

of Wilmington's all-time daily heat records were set in the last decade (126 of 366 records since 2015).

28.1%

of all-time daily cold records were set in the last decade (103 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
65
84
2000s
114
117
2010s
116
121
2020s
71
44

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 1995, the latest in 2026. Period of observation: 1995-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 22, 1999 -11.9°F — Jan 22, 2011 3.40 in — Jan 3, 2000
February 77.0°F — Feb 20, 2018 -14.1°F — Feb 24, 2015 2.23 in — Feb 18, 2000
March 84.9°F — Mar 21, 2012 -0.9°F — Mar 6, 2015 3.03 in — Mar 18, 2008
April 86.0°F — Apr 25, 2009 16.0°F — Apr 5, 1995 2.68 in — Apr 16, 1998
May 91.9°F — May 26, 2012 27.0°F — May 15, 2009 2.30 in — May 6, 2022
June 99.0°F — Jun 28, 2012 33.1°F — Jun 29, 2005 3.47 in — Jun 26, 2015
July 99.0°F — Jul 7, 2012 48.9°F — Jul 2, 2007 4.65 in — Jul 27, 2002
August 97.0°F — Aug 8, 2007 44.1°F — Aug 27, 2025 2.96 in — Aug 30, 2005
September 98.1°F — Sep 3, 2011 0.0°F — Sep 18, 2015 3.95 in — Sep 12, 2006
October 93.0°F — Oct 2, 2019 23.0°F — Oct 23, 1997 3.08 in — Oct 23, 2007
November 81.0°F — Nov 2, 2016 7.0°F — Nov 13, 2019 2.17 in — Nov 5, 2017
December 73.0°F — Dec 6, 1998 -8.0°F — Dec 23, 2022 2.36 in — Dec 5, 2011

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