All-time weather records — Imperial, CA

Record high
122.0°F
June 20, 2017
Record low
-0.8°F
July 1, 2007
Wettest day
2.22 in
September 10, 1976

Climate change signal in Imperial

34.2%

of Imperial's all-time daily heat records were set in the last decade (125 of 366 records since 2015).

5.5%

of all-time daily cold records were set in the last decade (20 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 #
1960s
94
126
1970s
39
137
1980s
14
9
2000s
63
52
2010s
82
31
2020s
74
11

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 1962, the latest in 2026. Period of observation: 1962-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 90.0°F — Jan 19, 1971 21.0°F — Jan 14, 1963 1.10 in — Jan 21, 2010
February 97.0°F — Feb 28, 2026 22.1°F — Feb 3, 2011 1.17 in — Feb 22, 2004
March 107.1°F — Mar 20, 2026 28.0°F — Mar 3, 1971 0.66 in — Mar 7, 2010
April 106.0°F — Apr 28, 2007 37.9°F — Apr 2, 1975 0.61 in — Apr 9, 1975
May 111.9°F — May 19, 2008 43.0°F — May 1, 1967 0.62 in — May 15, 2015
June 122.0°F — Jun 20, 2017 39.0°F — Jun 16, 2008 0.08 in — Jun 9, 2015
July 120.9°F — Jul 7, 2017 -0.8°F — Jul 1, 2007 0.91 in — Jul 30, 2012
August 118.9°F — Aug 4, 2021 42.1°F — Aug 22, 2008 2.18 in — Aug 15, 1977
September 120.9°F — Sep 5, 2020 54.0°F — Sep 20, 1965 2.22 in — Sep 10, 1976
October 109.9°F — Oct 1, 1980 32.0°F — Oct 30, 1971 1.57 in — Oct 6, 1972
November 106.0°F — Nov 6, 2008 30.0°F — Nov 21, 1979 1.50 in — Nov 9, 1969
December 99.0°F — Dec 13, 2013 24.1°F — Dec 9, 1978 0.98 in — Dec 17, 2008

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