All-time weather records — Suisun City, CA

Record high
114.1°F
July 24, 2006
Record low
15.1°F
December 25, 2011
Wettest day
6.10 in
October 24, 2021

Climate change signal in Suisun City

15.3%

of Suisun City's all-time daily heat records were set in the last decade (56 of 366 records since 2015).

1.4%

of all-time daily cold records were set in the last decade (5 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 #
1950s
70
95
1960s
35
59
1970s
16
43
1980s
68
121
1990s
33
4
2000s
66
7
2010s
47
32
2020s
31
5

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 1951, the latest in 2025. Period of observation: 1950-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 78.1°F — Jan 18, 2021 18.0°F — Jan 1, 1979 3.65 in — Jan 11, 1979
February 80.1°F — Feb 12, 1953 24.1°F — Feb 3, 1985 3.81 in — Feb 3, 1998
March 89.1°F — Mar 31, 1966 19.9°F — Mar 2, 1956 2.83 in — Mar 13, 1983
April 98.1°F — Apr 17, 1954 26.1°F — Apr 8, 2010 2.38 in — Apr 11, 1982
May 111.0°F — May 29, 1984 35.1°F — May 4, 1976 2.17 in — May 15, 1996
June 111.0°F — Jun 23, 1981 28.9°F — Jun 26, 2011 1.63 in — Jun 16, 1995
July 114.1°F — Jul 24, 2006 21.9°F — Jul 11, 2011 0.49 in — Jul 9, 1974
August 111.0°F — Aug 5, 1998 19.9°F — Aug 12, 1952 1.01 in — Aug 22, 1968
September 114.1°F — Sep 5, 2022 36.0°F — Sep 2, 2023 2.49 in — Sep 18, 1959
October 104.0°F — Oct 1, 1952 32.0°F — Oct 6, 2011 6.10 in — Oct 24, 2021
November 89.1°F — Nov 12, 1989 21.0°F — Nov 19, 1985 3.95 in — Nov 22, 1977
December 78.1°F — Dec 1, 1977 15.1°F — Dec 25, 2011 5.58 in — Dec 14, 2002

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