All-time weather records — Sebastopol, CA

Record high
115.0°F
September 6, 2022
Record low
14.0°F
December 22, 1990
Wettest day
6.95 in
February 4, 1937

Climate change signal in Sebastopol

16.9%

of Sebastopol's all-time daily heat records were set in the last decade (62 of 366 records since 2015).

3.3%

of all-time daily cold records were set in the last decade (12 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 #
1920s
17
22
1930s
53
29
1940s
5
29
1950s
16
44
1960s
19
28
1970s
38
94
1980s
49
26
1990s
25
29
2000s
44
37
2010s
64
24
2020s
36
4

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 1926, the latest in 2026. Period of observation: 1926-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.0°F — Jan 8, 1962 18.0°F — Jan 9, 1937 5.72 in — Jan 4, 1982
February 88.0°F — Feb 16, 2016 17.1°F — Feb 7, 1989 6.95 in — Feb 4, 1937
March 90.0°F — Mar 17, 2004 25.0°F — Mar 2, 1953 6.49 in — Mar 9, 1995
April 98.1°F — Apr 29, 1981 25.0°F — Apr 2, 1936 4.00 in — Apr 27, 1953
May 102.9°F — May 29, 1950 28.9°F — May 18, 1927 2.33 in — May 16, 1996
June 108.0°F — Jun 20, 1981 33.1°F — Jun 3, 1976 2.12 in — Jun 2, 1967
July 113.0°F — Jul 14, 1972 37.9°F — Jul 6, 2009 1.23 in — Jul 8, 1974
August 109.0°F — Aug 14, 2020 35.1°F — Aug 31, 2007 1.71 in — Aug 28, 1954
September 115.0°F — Sep 6, 2022 28.0°F — Sep 20, 2012 4.18 in — Sep 18, 1959
October 106.0°F — Oct 1, 2024 21.9°F — Oct 29, 1971 6.17 in — Oct 25, 2021
November 91.9°F — Nov 3, 1929 19.9°F — Nov 25, 1986 5.54 in — Nov 22, 1977
December 81.0°F — Dec 3, 2011 14.0°F — Dec 22, 1990 6.70 in — Dec 19, 1981

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