All-time weather records — Mesa, AZ

Record high
120.9°F
July 2, 2011
Record low
19.9°F
January 14, 2007
Wettest day
4.26 in
September 8, 2014

Climate change signal in Mesa

49.5%

of Mesa's all-time daily heat records were set in the last decade (181 of 366 records since 2015).

27.6%

of all-time daily cold records were set in the last decade (101 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 #
2000s
126
160
2010s
115
151
2020s
125
55

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 2002, the latest in 2026. Period of observation: 2002-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.0°F — Jan 29, 2018 19.9°F — Jan 14, 2007 2.15 in — Jan 21, 2010
February 91.9°F — Feb 27, 2026 19.9°F — Feb 3, 2011 1.64 in — Feb 22, 2019
March 105.1°F — Mar 20, 2026 30.0°F — Mar 1, 2007 1.30 in — Mar 2, 2014
April 105.1°F — Apr 22, 2012 32.0°F — Apr 5, 2023 1.80 in — Apr 2, 2004
May 111.9°F — May 28, 2003 46.0°F — May 1, 2010 1.06 in — May 22, 2008
June 120.0°F — Jun 20, 2017 57.0°F — Jun 3, 2011 0.24 in — Jun 25, 2024
July 120.9°F — Jul 2, 2011 63.0°F — Jul 1, 2004 2.79 in — Jul 10, 2008
August 117.0°F — Aug 7, 2025 64.9°F — Aug 8, 2009 2.27 in — Aug 21, 2006
September 115.0°F — Sep 3, 2010 50.0°F — Sep 25, 2017 4.26 in — Sep 8, 2014
October 111.9°F — Oct 1, 2024 35.1°F — Oct 29, 2009 3.22 in — Oct 12, 2025
November 98.1°F — Nov 3, 2009 27.0°F — Nov 30, 2010 1.82 in — Nov 22, 2013
December 84.9°F — Dec 1, 2021 24.1°F — Dec 29, 2003 1.49 in — Dec 24, 2021

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