All-time weather records — Colma, CA

Record high
108.0°F
April 14, 1985
Record low
3.0°F
January 6, 2021
Wettest day
4.31 in
December 11, 2014

Climate change signal in Colma

23%

of Colma's all-time daily heat records were set in the last decade (84 of 366 records since 2015).

38.3%

of all-time daily cold records were set in the last decade (140 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 #
1940s
·
·
1950s
23
7
1960s
46
46
1970s
54
60
1980s
63
34
1990s
33
24
2000s
44
17
2010s
76
91
2020s
27
87

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 1958, the latest in 2025. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.9°F — Jan 8, 2008 3.0°F — Jan 6, 2021 3.68 in — Jan 8, 2018
February 77.0°F — Feb 12, 1996 21.0°F — Feb 14, 2024 3.90 in — Feb 2, 1998
March 81.0°F — Mar 9, 2004 25.0°F — Mar 20, 2023 2.52 in — Mar 5, 1992
April 108.0°F — Apr 14, 1985 26.1°F — Apr 14, 1985 2.01 in — Apr 6, 2018
May 98.1°F — May 15, 2008 35.1°F — May 5, 2017 1.44 in — May 15, 1996
June 97.0°F — Jun 10, 2019 21.0°F — Jun 3, 2011 1.66 in — Jun 2, 1967
July 86.0°F — Jul 1, 1985 32.0°F — Jul 28, 2018 0.50 in — Jul 8, 1974
August 95.0°F — Aug 29, 1968 30.9°F — Aug 3, 2018 1.20 in — Aug 11, 1965
September 96.1°F — Sep 11, 1979 30.9°F — Sep 19, 2009 1.98 in — Sep 18, 1959
October 99.0°F — Oct 15, 1961 30.9°F — Oct 20, 2020 3.15 in — Oct 13, 1962
November 90.0°F — Nov 1, 2019 17.1°F — Nov 1, 2018 2.47 in — Nov 21, 2024
December 73.0°F — Dec 7, 2020 19.9°F — Dec 8, 2018 4.31 in — Dec 11, 2014

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