All-time weather records — Mendota, CA

Record high
115.0°F
September 6, 2022
Record low
19.0°F
December 21, 1998
Wettest day
1.90 in
March 17, 2012

Climate change signal in Mendota

51.4%

of Mendota's all-time daily heat records were set in the last decade (188 of 366 records since 2015).

22.7%

of all-time daily cold records were set in the last decade (83 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
7
55
2000s
104
164
2010s
140
89
2020s
115
58

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 78.1°F — Jan 29, 2024 20.1°F — Jan 12, 2007 1.51 in — Jan 2, 2006
February 82.0°F — Feb 28, 2020 24.3°F — Feb 4, 2020 1.22 in — Feb 27, 2000
March 91.0°F — Mar 15, 2015 29.1°F — Mar 10, 2009 1.90 in — Mar 17, 2012
April 98.1°F — Apr 21, 2009 30.9°F — Apr 4, 1999 1.29 in — Apr 13, 2003
May 106.0°F — May 17, 2009 37.0°F — May 10, 2022 1.42 in — May 5, 2005
June 109.0°F — Jun 18, 2021 44.1°F — Jun 2, 2011 0.68 in — Jun 5, 2011
July 111.9°F — Jul 11, 2021 51.1°F — Jul 4, 2000 0.11 in — Jul 18, 2015
August 111.0°F — Aug 7, 2024 48.9°F — Aug 31, 1999 0.07 in — Aug 26, 2025
September 115.0°F — Sep 6, 2022 43.0°F — Sep 27, 2013 0.47 in — Sep 19, 2022
October 105.1°F — Oct 3, 2024 33.1°F — Oct 12, 2008 0.87 in — Oct 26, 2004
November 90.0°F — Nov 5, 2010 24.1°F — Nov 25, 2003 1.15 in — Nov 30, 2012
December 75.9°F — Dec 8, 2006 19.0°F — Dec 21, 1998 1.32 in — Dec 12, 2014

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