All-time weather records — Concord, CA

Record high
111.9°F
July 22, 2006
Record low
-25.1°F
July 1, 1999
Wettest day
4.53 in
October 24, 2021

Climate change signal in Concord

56.3%

of Concord's all-time daily heat records were set in the last decade (206 of 366 records since 2015).

16.1%

of all-time daily cold records were set in the last decade (59 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
10
19
2000s
103
167
2010s
146
140
2020s
107
40

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 1999, the latest in 2026. Period of observation: 1999-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 78.1°F — Jan 18, 2021 24.1°F — Jan 13, 2007 2.88 in — Jan 4, 2008
February 81.0°F — Feb 9, 2018 28.9°F — Feb 26, 2011 1.61 in — Feb 25, 2004
March 89.1°F — Mar 20, 2026 33.1°F — Mar 2, 2023 1.38 in — Mar 5, 2016
April 93.9°F — Apr 26, 2004 36.0°F — Apr 24, 2008 1.08 in — Apr 6, 2018
May 105.1°F — May 31, 2001 39.9°F — May 11, 2010 0.86 in — May 4, 2024
June 109.0°F — Jun 14, 2000 5.0°F — Jun 30, 1999 1.06 in — Jun 4, 2011
July 111.9°F — Jul 22, 2006 -25.1°F — Jul 1, 1999 0.01 in — Jul 18, 2007
August 107.1°F — Aug 27, 2017 51.1°F — Aug 20, 2002 0.19 in — Aug 21, 2003
September 111.9°F — Sep 5, 2022 45.0°F — Sep 29, 2007 0.65 in — Sep 21, 2013
October 102.9°F — Oct 1, 2024 39.0°F — Oct 31, 2019 4.53 in — Oct 24, 2021
November 87.1°F — Nov 3, 2018 28.9°F — Nov 26, 2010 1.62 in — Nov 30, 2012
December 75.0°F — Dec 2, 2011 24.3°F — Dec 10, 2013 3.04 in — Dec 31, 2022

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