All-time weather records — Cottonwood, ID

Record high
102.9°F
August 10, 2018
Record low
-20.0°F
February 3, 1989
Wettest day
2.10 in
January 23, 1982

Climate change signal in Cottonwood

33.1%

of Cottonwood's all-time daily heat records were set in the last decade (121 of 366 records since 2015).

13.1%

of all-time daily cold records were set in the last decade (48 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 #
1950s
·
·
1970s
20
27
1980s
68
115
1990s
73
90
2000s
73
71
2010s
61
35
2020s
71
28

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 1977, the latest in 2026. Period of observation: 1950-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 60.1°F — Jan 26, 2015 -17.0°F — Jan 13, 2024 2.10 in — Jan 23, 1982
February 64.0°F — Feb 23, 1995 -20.0°F — Feb 3, 1989 1.26 in — Feb 23, 1986
March 73.9°F — Mar 26, 2025 3.9°F — Mar 3, 1989 0.86 in — Mar 10, 1997
April 82.9°F — Apr 24, 1977 18.0°F — Apr 14, 1986 1.70 in — Apr 27, 1978
May 88.0°F — May 31, 2025 24.1°F — May 2, 1997 1.98 in — May 29, 1990
June 100.0°F — Jun 28, 2015 32.0°F — Jun 7, 1995 1.23 in — Jun 15, 1989
July 100.0°F — Jul 31, 2020 30.9°F — Jul 2, 1979 1.50 in — Jul 17, 1987
August 102.9°F — Aug 10, 2018 32.0°F — Aug 24, 1992 1.39 in — Aug 21, 2008
September 96.1°F — Sep 2, 2025 25.0°F — Sep 23, 2000 2.00 in — Sep 9, 1998
October 87.1°F — Oct 1, 1992 8.1°F — Oct 29, 2019 1.08 in — Oct 25, 1977
November 68.0°F — Nov 9, 2016 -5.1°F — Nov 23, 1985 1.23 in — Nov 25, 2014
December 59.0°F — Dec 1, 2021 -18.0°F — Dec 22, 1990 1.50 in — Dec 2, 1977

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