All-time weather records — East Thermopolis, WY

Record high
107.1°F
July 25, 1929
Record low
-44.0°F
January 16, 1930
Wettest day
4.94 in
September 30, 1923

Climate change signal in East Thermopolis

18.3%

of East Thermopolis's all-time daily heat records were set in the last decade (67 of 366 records since 2015).

3.3%

of all-time daily cold records were set in the last decade (12 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
·
7
1900s
19
49
1910s
34
55
1920s
18
55
1930s
67
61
1940s
15
14
1950s
42
65
1960s
10
20
1990s
40
12
2000s
38
9
2010s
25
10
2020s
58
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 1900, the latest in 2026. Period of observation: 1899-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 9, 1953 -44.0°F — Jan 16, 1930 1.43 in — Jan 16, 1995
February 70.0°F — Feb 10, 1951 -42.0°F — Feb 9, 1933 0.89 in — Feb 28, 2004
March 84.0°F — Mar 20, 2026 -27.9°F — Mar 16, 1906 2.24 in — Mar 20, 1904
April 90.0°F — Apr 13, 1952 -6.0°F — Apr 3, 1936 3.46 in — Apr 6, 1922
May 98.1°F — May 31, 1936 12.0°F — May 2, 1954 4.50 in — May 4, 1906
June 105.1°F — Jun 23, 1954 24.1°F — Jun 3, 1951 2.27 in — Jun 2, 1915
July 107.1°F — Jul 25, 1929 34.0°F — Jul 8, 1955 1.23 in — Jul 26, 2007
August 106.0°F — Aug 23, 1903 23.0°F — Aug 25, 1910 1.88 in — Aug 12, 1930
September 104.0°F — Sep 7, 2022 7.0°F — Sep 25, 1926 4.94 in — Sep 30, 1923
October 91.9°F — Oct 3, 1917 -11.0°F — Oct 26, 2020 2.17 in — Oct 30, 1922
November 77.0°F — Nov 15, 1941 -27.9°F — Nov 13, 1916 1.10 in — Nov 11, 1923
December 78.1°F — Dec 10, 1939 -38.0°F — Dec 18, 1924 1.12 in — Dec 19, 1925

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