All-time weather records — San Bruno, CA

Record high
102.0°F
October 5, 1987
Record low
21.9°F
December 30, 2000
Wettest day
5.00 in
December 27, 2004

Climate change signal in San Bruno

0%

of San Bruno's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 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 #
1980s
109
127
1990s
108
125
2000s
132
82
2010s
17
32

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 1984, the latest in 2012. Period of observation: 1983-2012.

Records by month

Month Hottest day Coldest day Wettest day
January 73.9°F — Jan 13, 2009 28.9°F — Jan 4, 2008 3.63 in — Jan 24, 2000
February 78.1°F — Feb 27, 1992 27.0°F — Feb 6, 1989 3.47 in — Feb 16, 2009
March 82.0°F — Mar 11, 2005 33.1°F — Mar 11, 2006 2.50 in — Mar 9, 1995
April 93.0°F — Apr 20, 2009 37.0°F — Apr 9, 1999 1.58 in — Apr 12, 2006
May 95.0°F — May 15, 2008 32.0°F — May 31, 2009 1.29 in — May 16, 1996
June 98.1°F — Jun 14, 2000 44.1°F — Jun 1, 1985 1.16 in — Jun 4, 2011
July 100.0°F — Jul 17, 1988 28.0°F — Jul 1, 1994 0.18 in — Jul 13, 2011
August 96.1°F — Aug 24, 2010 34.0°F — Aug 20, 1986 0.70 in — Aug 20, 1997
September 98.1°F — Sep 8, 1984 27.0°F — Sep 1, 1994 0.75 in — Sep 24, 1986
October 102.0°F — Oct 5, 1987 37.9°F — Oct 25, 2000 4.60 in — Oct 13, 2009
November 81.0°F — Nov 6, 1991 30.9°F — Nov 23, 2011 4.05 in — Nov 5, 1994
December 73.9°F — Dec 18, 1998 21.9°F — Dec 30, 2000 5.00 in — Dec 27, 2004

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