All-time weather records — Mason, WI

Record high
100.9°F
July 15, 2006
Record low
-27.8°F
January 31, 2019
Wettest day
5.08 in
July 11, 2016

Climate change signal in Mason

44%

of Mason's all-time daily heat records were set in the last decade (161 of 366 records since 2015).

36.3%

of all-time daily cold records were set in the last decade (133 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
23
13
2000s
129
149
2010s
105
127
2020s
109
77

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 52.0°F — Jan 10, 2012 -27.8°F — Jan 31, 2019 0.82 in — Jan 24, 2010
February 62.1°F — Mar 1, 2000 -25.8°F — Feb 16, 2021 1.08 in — Feb 22, 2023
March 82.0°F — Mar 18, 2012 -20.7°F — Mar 2, 2009 1.56 in — Mar 16, 2016
April 88.0°F — Apr 16, 2002 1.0°F — Apr 6, 2003 1.97 in — Apr 10, 2002
May 93.0°F — May 6, 2016 21.0°F — May 3, 2004 2.58 in — May 24, 2012
June 97.0°F — Jun 20, 2022 29.1°F — Jun 1, 2015 3.37 in — Jun 17, 2018
July 100.9°F — Jul 15, 2006 36.0°F — Jul 8, 2021 5.08 in — Jul 11, 2016
August 93.9°F — Aug 6, 2001 34.0°F — Aug 29, 2004 2.84 in — Aug 26, 2013
September 95.0°F — Sep 4, 2023 25.2°F — Sep 15, 2007 2.20 in — Sep 23, 2010
October 88.0°F — Oct 4, 2025 14.2°F — Oct 27, 2020 4.78 in — Oct 4, 2005
November 78.1°F — Nov 6, 2020 -3.8°F — Nov 20, 2014 1.39 in — Nov 10, 2022
December 57.0°F — Dec 3, 1998 -19.8°F — Dec 30, 2013 1.32 in — Dec 14, 2022

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