All-time weather records — Mullan, ID

Record high
105.1°F
August 10, 2018
Record low
-36.0°F
October 24, 2019
Wettest day
3.30 in
October 10, 2016

Climate change signal in Mullan

35.2%

of Mullan's all-time daily heat records were set in the last decade (129 of 366 records since 2015).

33.3%

of all-time daily cold records were set in the last decade (122 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 #
1970s
32
50
1980s
112
127
1990s
65
48
2010s
79
86
2020s
78
55

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 1975, the latest in 2026. Period of observation: 1975-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 55.9°F — Jan 5, 2012 -23.1°F — Jan 13, 2024 2.53 in — Jan 13, 2021
February 64.9°F — Feb 20, 1977 -18.0°F — Feb 3, 1989 3.17 in — Feb 16, 1986
March 75.9°F — Mar 31, 2013 -2.9°F — Mar 4, 1976 2.74 in — Mar 9, 2014
April 87.1°F — Apr 25, 1977 15.1°F — Apr 19, 2018 2.00 in — Apr 26, 1993
May 93.0°F — May 29, 1986 -25.1°F — May 16, 2019 1.62 in — May 9, 2022
June 102.9°F — Jun 29, 2021 -18.0°F — Jun 1, 2019 1.74 in — Jun 12, 2022
July 100.9°F — Jul 31, 2021 -6.0°F — Jul 16, 2019 1.28 in — Jul 5, 1988
August 105.1°F — Aug 10, 2018 28.9°F — Aug 25, 2024 1.37 in — Aug 22, 1992
September 99.0°F — Sep 3, 2025 19.9°F — Sep 29, 1985 2.73 in — Sep 30, 2013
October 87.1°F — Oct 2, 1987 -36.0°F — Oct 24, 2019 3.30 in — Oct 10, 2016
November 64.9°F — Nov 1, 1981 -31.0°F — Nov 5, 2019 2.69 in — Nov 25, 1990
December 57.0°F — Dec 1, 2021 -20.9°F — Dec 31, 1978 2.45 in — Dec 9, 2015

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