All-time weather records — Riverside, CA

Record high
118.0°F
June 16, 1917
Record low
-38.9°F
November 4, 1940
Wettest day
4.42 in
March 4, 1938

Climate change signal in Riverside

2.5%

of Riverside's all-time daily heat records were set in the last decade (9 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 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 #
1890s
5
27
1900s
20
64
1910s
63
95
1920s
42
36
1930s
25
32
1940s
30
51
1950s
24
48
1960s
14
3
1970s
23
3
1980s
35
3
1990s
31
2
2000s
31
·
2010s
23
2
2020s
·
·

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 1894, the latest in 2016. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 93.9°F — Jan 2, 2012 1.0°F — Jan 20, 1911 2.70 in — Jan 26, 1956
February 99.0°F — Feb 4, 1992 24.1°F — Feb 15, 1942 3.22 in — Feb 7, 1937
March 102.0°F — Mar 10, 1916 25.0°F — Mar 2, 1903 4.42 in — Mar 4, 1938
April 105.1°F — Apr 6, 1989 28.9°F — Apr 4, 1970 3.07 in — Apr 5, 1926
May 109.9°F — May 29, 1984 28.0°F — May 4, 1982 1.39 in — May 1, 1930
June 118.0°F — Jun 16, 1917 35.1°F — Jun 11, 1894 0.83 in — Jun 5, 1993
July 118.0°F — Jul 17, 1925 41.0°F — Jul 7, 1948 1.26 in — Jul 25, 1956
August 113.0°F — Aug 5, 1997 39.9°F — Aug 27, 1902 2.05 in — Aug 17, 1977
September 115.0°F — Sep 6, 1955 35.1°F — Sep 14, 1902 1.72 in — Sep 30, 1921
October 109.0°F — Oct 1, 1980 30.0°F — Oct 30, 1971 2.50 in — Oct 20, 2004
November 99.0°F — Nov 2, 1924 -38.9°F — Nov 4, 1940 2.11 in — Nov 11, 1954
December 93.9°F — Dec 3, 1958 21.0°F — Dec 12, 1949 3.28 in — Dec 11, 1943

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