All-time weather records — San Diego, CA

Record high
107.1°F
September 14, 2012
Record low
1.2°F
September 14, 2009
Wettest day
3.12 in
February 27, 2017

Climate change signal in San Diego

48.4%

of San Diego's all-time daily heat records were set in the last decade (177 of 366 records since 2015).

16.4%

of all-time daily cold records were set in the last decade (60 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
12
92
2000s
129
137
2010s
142
104
2020s
83
33

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 102.0°F — Jan 30, 2024 30.2°F — Jan 14, 2007 2.43 in — Jan 5, 2016
February 91.0°F — Feb 12, 2022 33.1°F — Feb 1, 2002 3.12 in — Feb 27, 2017
March 95.0°F — Mar 20, 2026 35.1°F — Mar 2, 2023 1.44 in — Mar 15, 2023
April 100.0°F — Apr 20, 2009 37.0°F — Apr 2, 1999 1.41 in — Apr 10, 2020
May 102.0°F — May 3, 2004 44.1°F — May 1, 1999 0.64 in — May 22, 2006
June 100.0°F — Jun 20, 2016 48.0°F — Jun 5, 1999 0.11 in — Jun 29, 2020
July 106.0°F — Jul 22, 2006 57.0°F — Jul 6, 2000 1.42 in — Jul 18, 2015
August 105.1°F — Aug 29, 2009 55.0°F — Aug 31, 2010 2.15 in — Aug 20, 2023
September 107.1°F — Sep 14, 2012 1.2°F — Sep 14, 2009 1.08 in — Sep 16, 2014
October 105.1°F — Oct 24, 2017 43.0°F — Oct 29, 2009 2.71 in — Oct 27, 2004
November 99.0°F — Nov 22, 2017 34.0°F — Nov 30, 2004 1.59 in — Nov 30, 2007
December 90.0°F — Dec 1, 1998 32.0°F — Dec 24, 1998 2.17 in — Dec 22, 2010

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