All-time weather records — Rohnert Park, CA

Record high
115.0°F
September 6, 2022
Record low
9.0°F
December 25, 1924
Wettest day
7.83 in
October 24, 2021

Climate change signal in Rohnert Park

12.6%

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

1.1%

of all-time daily cold records were set in the last decade (4 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 #
1900s
12
51
1910s
26
163
1920s
32
51
1930s
55
28
1940s
12
22
1950s
29
22
1960s
36
11
1970s
44
7
1980s
23
1
1990s
10
2
2000s
31
·
2010s
24
6
2020s
32
2

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 1902, the latest in 2026. Period of observation: 1902-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.9°F — Jan 9, 1962 15.1°F — Jan 2, 1919 5.04 in — Jan 5, 1966
February 93.0°F — Feb 28, 1923 19.9°F — Feb 9, 1929 5.66 in — Feb 26, 2019
March 91.9°F — Mar 19, 2026 24.1°F — Mar 6, 1918 3.95 in — Mar 9, 1995
April 98.1°F — Apr 29, 1981 26.1°F — Apr 6, 1929 3.06 in — Apr 4, 1926
May 104.0°F — May 29, 1950 27.0°F — May 10, 1905 2.80 in — May 27, 1990
June 109.0°F — Jun 3, 1960 30.0°F — Jun 3, 1902 1.65 in — Jun 2, 1967
July 113.0°F — Jul 11, 1913 39.0°F — Jul 30, 1924 1.33 in — Jul 8, 1974
August 107.1°F — Aug 24, 2010 30.0°F — Aug 26, 2011 1.32 in — Aug 21, 1968
September 115.0°F — Sep 6, 2022 30.0°F — Sep 11, 1915 2.90 in — Sep 23, 1904
October 105.1°F — Oct 2, 1980 24.1°F — Oct 12, 1915 7.83 in — Oct 24, 2021
November 91.9°F — Nov 2, 1967 21.0°F — Nov 15, 1916 5.45 in — Nov 21, 2024
December 82.9°F — Dec 26, 1967 9.0°F — Dec 25, 1924 5.23 in — Dec 19, 1981

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