All-time weather records — Gillette, WY

Record high
109.9°F
July 17, 1909
Record low
-40.0°F
February 8, 1936
Wettest day
4.10 in
June 22, 1964

Climate change signal in Gillette

15%

of Gillette's all-time daily heat records were set in the last decade (55 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 #
1900s
17
18
1910s
24
33
1920s
34
24
1930s
40
47
1940s
21
23
1950s
39
31
1960s
23
51
1970s
20
36
1980s
28
34
1990s
20
32
2000s
24
16
2010s
39
7
2020s
37
14

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 1905, the latest in 2026. Period of observation: 1902-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 23, 1981 -36.0°F — Jan 17, 1930 0.70 in — Jan 14, 1943
February 70.0°F — Feb 21, 1982 -40.0°F — Feb 8, 1936 1.31 in — Feb 25, 1998
March 82.0°F — Mar 21, 2026 -23.1°F — Mar 3, 1960 1.60 in — Mar 22, 1933
April 91.0°F — Apr 24, 1910 -11.9°F — Apr 2, 1936 2.43 in — Apr 30, 1993
May 95.0°F — May 28, 1934 10.9°F — May 3, 1954 3.23 in — May 18, 1978
June 107.1°F — Jun 24, 2012 28.0°F — Jun 14, 1969 4.10 in — Jun 22, 1964
July 109.9°F — Jul 17, 1909 35.1°F — Jul 31, 1968 3.32 in — Jul 15, 1915
August 106.0°F — Aug 7, 1949 30.9°F — Aug 25, 1917 3.26 in — Aug 15, 1912
September 102.0°F — Sep 5, 1978 10.0°F — Sep 25, 1926 2.12 in — Sep 28, 1923
October 98.1°F — Oct 3, 1922 -11.9°F — Oct 28, 1925 2.16 in — Oct 6, 1994
November 81.0°F — Nov 6, 1908 -26.0°F — Nov 16, 1959 0.90 in — Nov 13, 1964
December 72.0°F — Dec 1, 2021 -36.9°F — Dec 24, 1983 1.15 in — Dec 17, 1908

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