All-time weather records — Pleasanton, CA

Record high
113.0°F
July 23, 2006
Record low
1.0°F
June 14, 1999
Wettest day
3.57 in
October 24, 2021

Climate change signal in Pleasanton

45.9%

of Pleasanton's all-time daily heat records were set in the last decade (168 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
19
66
2000s
100
190
2010s
149
86
2020s
98
24

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 75.9°F — Jan 16, 2021 19.9°F — Jan 14, 2007 2.32 in — Jan 4, 2008
February 80.1°F — Feb 28, 2020 6.1°F — Feb 8, 2006 2.06 in — Feb 20, 2017
March 91.0°F — Mar 20, 2026 28.0°F — Mar 8, 2002 0.97 in — Mar 24, 2011
April 93.9°F — Apr 21, 2009 30.9°F — Apr 3, 2001 1.14 in — Apr 12, 2003
May 104.0°F — May 17, 2009 36.0°F — May 11, 2010 0.72 in — May 2, 2003
June 109.0°F — Jun 28, 2009 1.0°F — Jun 14, 1999 0.78 in — Jun 28, 2011
July 113.0°F — Jul 23, 2006 48.0°F — Jul 2, 2003 0.01 in — Jul 21, 2005
August 111.9°F — Aug 4, 1998 48.0°F — Aug 7, 2002 0.11 in — Aug 16, 2020
September 113.0°F — Sep 5, 2022 42.1°F — Sep 30, 2007 0.46 in — Sep 21, 2013
October 108.0°F — Oct 2, 2024 34.0°F — Oct 31, 2002 3.57 in — Oct 24, 2021
November 84.9°F — Nov 2, 2018 26.1°F — Nov 30, 2004 1.85 in — Nov 30, 2012
December 73.0°F — Dec 1, 2013 21.0°F — Dec 24, 1998 3.46 in — Dec 31, 2022

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