All-time weather records — Big Sandy, MT

Record high
111.0°F
August 5, 1961
Record low
-52.1°F
February 15, 1936
Wettest day
60.23 in
December 9, 1929

Climate change signal in Big Sandy

6.8%

of Big Sandy's all-time daily heat records were set in the last decade (25 of 366 records since 2015).

5.5%

of all-time daily cold records were set in the last decade (20 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
13
64
1930s
78
43
1940s
30
27
1950s
24
60
1960s
42
39
1970s
23
23
1980s
52
25
1990s
40
49
2000s
32
13
2010s
17
11
2020s
15
12

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 1921, the latest in 2026. Period of observation: 1921-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 64.9°F — Jan 14, 2026 -51.0°F — Jan 25, 1969 20.01 in — Jan 17, 1931
February 75.9°F — Feb 27, 1992 -52.1°F — Feb 15, 1936 1.18 in — Feb 8, 2018
March 81.0°F — Mar 30, 2004 -44.0°F — Mar 8, 1951 1.07 in — Mar 29, 1932
April 93.9°F — Apr 29, 1939 -15.0°F — Apr 2, 1936 3.32 in — Apr 6, 1989
May 100.0°F — May 27, 1936 5.0°F — May 6, 1996 5.91 in — May 31, 1961
June 106.0°F — Jun 16, 1933 19.9°F — Jun 15, 1923 3.68 in — Jun 22, 1938
July 109.0°F — Jul 15, 1936 34.0°F — Jul 5, 1944 2.83 in — Jul 10, 1983
August 111.0°F — Aug 5, 1961 27.0°F — Aug 28, 1995 3.20 in — Aug 15, 1968
September 104.0°F — Sep 3, 2022 12.0°F — Sep 24, 1926 1.70 in — Sep 21, 2024
October 99.0°F — Oct 9, 2005 -18.9°F — Oct 29, 1991 1.46 in — Oct 20, 1958
November 78.1°F — Nov 1, 1953 -33.0°F — Nov 27, 1985 1.15 in — Nov 17, 1922
December 72.0°F — Dec 5, 1939 -50.1°F — Dec 24, 1983 60.23 in — Dec 9, 1929

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