All-time weather records — Fortuna, CA

Record high
104.0°F
September 2, 2017
Record low
17.1°F
December 12, 1932
Wettest day
5.95 in
December 10, 1939

Climate change signal in Fortuna

12.6%

of Fortuna's all-time daily heat records were set in the last decade (46 of 366 records since 2015).

5.2%

of all-time daily cold records were set in the last decade (19 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
13
11
1930s
45
25
1940s
47
55
1950s
23
76
1960s
23
58
1970s
22
59
1980s
32
28
1990s
31
30
2000s
66
2
2010s
51
4
2020s
13
18

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 2024. Period of observation: 1926-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 75.9°F — Jan 13, 1986 19.9°F — Jan 10, 1949 4.74 in — Jan 1, 1997
February 82.0°F — Feb 17, 1930 23.0°F — Feb 6, 1989 4.65 in — Feb 6, 2015
March 86.0°F — Mar 4, 1929 28.9°F — Mar 2, 1953 4.45 in — Mar 9, 1995
April 91.9°F — Apr 30, 2014 30.9°F — Apr 4, 2023 2.92 in — Apr 23, 1983
May 97.0°F — May 15, 2008 33.1°F — May 7, 1950 1.63 in — May 4, 2024
June 98.1°F — Jun 1, 1970 39.9°F — Jun 2, 1977 1.13 in — Jun 18, 2005
July 102.0°F — Jul 4, 1931 39.9°F — Jul 11, 1991 0.71 in — Jul 17, 1991
August 96.1°F — Aug 31, 1968 41.0°F — Aug 31, 1957 1.69 in — Aug 30, 1983
September 104.0°F — Sep 2, 2017 37.0°F — Sep 30, 1950 2.01 in — Sep 27, 1957
October 97.0°F — Oct 3, 1980 28.0°F — Oct 29, 1971 4.29 in — Oct 25, 1979
November 81.0°F — Nov 3, 1931 27.0°F — Nov 11, 1978 5.36 in — Nov 30, 1926
December 73.0°F — Dec 31, 1963 17.1°F — Dec 12, 1932 5.95 in — Dec 10, 1939

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