All-time weather records — Bozeman, MT

Record high
105.1°F
July 31, 1892
Record low
-43.1°F
February 8, 1936
Wettest day
2.68 in
May 7, 1988

Climate change signal in Bozeman

19.1%

of Bozeman's all-time daily heat records were set in the last decade (70 of 366 records since 2015).

4.4%

of all-time daily cold records were set in the last decade (16 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 #
1890s
34
23
1900s
4
47
1910s
26
45
1920s
8
36
1930s
22
51
1940s
9
18
1950s
11
30
1960s
26
29
1970s
15
9
1980s
39
26
1990s
35
13
2000s
54
18
2010s
27
12
2020s
56
9

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 1892, the latest in 2026. Period of observation: 1892-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 64.9°F — Jan 8, 1896 -40.0°F — Jan 13, 2024 0.77 in — Jan 28, 1942
February 64.9°F — Feb 5, 2026 -43.1°F — Feb 8, 1936 0.88 in — Feb 16, 1942
March 78.1°F — Mar 20, 2026 -29.0°F — Mar 4, 2019 1.20 in — Mar 11, 1991
April 82.9°F — Apr 26, 1897 -9.9°F — Apr 1, 1936 1.63 in — Apr 6, 2006
May 91.0°F — May 22, 1892 16.0°F — May 1, 1954 2.68 in — May 7, 1988
June 96.1°F — Jun 29, 1892 26.1°F — Jun 1, 1951 2.29 in — Jun 13, 2001
July 105.1°F — Jul 31, 1892 32.0°F — Jul 2, 1921 2.05 in — Jul 3, 1993
August 100.0°F — Aug 11, 2018 26.1°F — Aug 25, 1910 1.36 in — Aug 20, 2021
September 99.0°F — Sep 3, 2022 12.0°F — Sep 24, 1926 1.69 in — Sep 10, 1947
October 88.0°F — Oct 1, 1992 -9.9°F — Oct 30, 1935 1.66 in — Oct 15, 1935
November 73.0°F — Nov 1, 2025 -26.0°F — Nov 15, 1955 1.62 in — Nov 12, 2009
December 64.0°F — Dec 1, 2021 -38.9°F — Dec 22, 2022 1.25 in — Dec 26, 2008

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