All-time weather records — Shasta Lake, CA

Record high
115.0°F
July 28, 1976
Record low
7.0°F
January 26, 1985
Wettest day
11.64 in
December 22, 1964

Climate change signal in Shasta Lake

24.9%

of Shasta Lake's all-time daily heat records were set in the last decade (91 of 366 records since 2015).

10.1%

of all-time daily cold records were set in the last decade (37 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 #
1940s
54
26
1950s
26
68
1960s
22
53
1970s
29
68
1980s
69
51
1990s
27
31
2000s
36
14
2010s
45
29
2020s
58
26

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 1943, the latest in 2026. Period of observation: 1943-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 80.1°F — Jan 30, 2015 7.0°F — Jan 26, 1985 7.74 in — Jan 16, 1973
February 80.1°F — Feb 22, 1995 21.0°F — Feb 5, 1989 7.20 in — Feb 27, 2019
March 95.0°F — Mar 21, 2026 25.0°F — Mar 24, 2011 8.17 in — Mar 15, 2019
April 97.0°F — Apr 14, 1947 28.0°F — Apr 13, 2012 4.96 in — Apr 26, 1959
May 107.1°F — May 19, 1973 35.1°F — May 3, 1950 3.98 in — May 17, 1996
June 111.0°F — Jun 27, 2021 37.9°F — Jun 4, 1982 5.27 in — Jun 30, 1992
July 115.0°F — Jul 28, 1976 50.0°F — Jul 1, 1997 2.63 in — Jul 9, 1974
August 115.0°F — Aug 8, 1981 44.1°F — Aug 22, 1978 3.40 in — Aug 15, 1976
September 114.1°F — Sep 3, 1955 43.0°F — Sep 29, 2019 4.43 in — Sep 27, 1957
October 104.0°F — Oct 2, 2012 34.0°F — Oct 30, 1971 4.33 in — Oct 31, 1944
November 90.0°F — Nov 4, 1949 27.0°F — Nov 28, 2025 6.53 in — Nov 28, 1970
December 80.1°F — Dec 2, 2021 14.0°F — Dec 21, 1990 11.64 in — Dec 22, 1964

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