All-time weather records — Colstrip, MT

Record high
111.0°F
August 6, 1961
Record low
-50.1°F
February 15, 1936
Wettest day
50.28 in
July 3, 1956

Climate change signal in Colstrip

8.7%

of Colstrip's all-time daily heat records were set in the last decade (32 of 366 records since 2015).

4.9%

of all-time daily cold records were set in the last decade (18 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 #
1920s
9
21
1930s
92
59
1940s
38
48
1950s
33
67
1960s
42
58
1970s
14
22
1980s
46
36
1990s
38
21
2000s
17
12
2010s
20
9
2020s
17
13

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 1927, the latest in 2026. Period of observation: 1927-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 29, 1931 -42.0°F — Jan 17, 1930 0.97 in — Jan 15, 1949
February 72.0°F — Feb 22, 1982 -50.1°F — Feb 15, 1936 0.91 in — Feb 21, 1931
March 81.0°F — Mar 31, 2004 -27.9°F — Mar 5, 1945 1.54 in — Mar 22, 1933
April 90.0°F — Apr 21, 1980 -13.0°F — Apr 5, 1936 2.82 in — Apr 26, 1969
May 99.0°F — May 29, 1934 7.0°F — May 6, 1952 2.85 in — May 30, 2013
June 108.0°F — Jun 27, 1936 28.0°F — Jun 2, 1964 3.77 in — Jun 17, 1944
July 109.9°F — Jul 5, 1936 34.0°F — Jul 11, 1951 50.28 in — Jul 3, 1956
August 111.0°F — Aug 6, 1961 33.1°F — Aug 22, 1966 3.16 in — Aug 24, 2014
September 105.1°F — Sep 8, 2022 5.0°F — Sep 25, 1984 2.41 in — Sep 12, 2019
October 93.9°F — Oct 4, 1963 -8.0°F — Oct 24, 2002 2.46 in — Oct 31, 1974
November 80.1°F — Nov 12, 1999 -32.1°F — Nov 16, 1959 1.18 in — Nov 1, 1957
December 73.9°F — Dec 5, 1939 -41.1°F — Dec 23, 2002 1.09 in — Dec 19, 2025

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