All-time weather records — Jackson, WY

Record high
100.9°F
July 17, 1934
Record low
-52.1°F
December 20, 1924
Wettest day
3.50 in
July 20, 1924

Climate change signal in Jackson

4.4%

of Jackson's all-time daily heat records were set in the last decade (16 of 366 records since 2015).

1.9%

of all-time daily cold records were set in the last decade (7 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
12
17
1910s
8
15
1920s
32
25
1930s
59
34
1940s
24
42
1950s
41
52
1960s
14
47
1970s
17
47
1980s
38
38
1990s
50
26
2000s
52
7
2010s
6
12
2020s
13
4

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: 1905-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 57.9°F — Jan 31, 1925 -50.1°F — Jan 1, 1979 2.10 in — Jan 20, 1906
February 59.0°F — Feb 11, 1905 -47.9°F — Feb 9, 1933 2.05 in — Feb 21, 1927
March 71.1°F — Mar 21, 2026 -49.0°F — Mar 17, 1906 1.80 in — Mar 3, 1995
April 79.0°F — Apr 29, 1992 -5.1°F — Apr 1, 1970 2.00 in — Apr 25, 2023
May 90.0°F — May 29, 2003 5.0°F — May 2, 1988 1.78 in — May 9, 2011
June 95.0°F — Jun 26, 1988 12.0°F — Jun 3, 1906 1.37 in — Jun 8, 2009
July 100.9°F — Jul 17, 1934 24.1°F — Jul 1, 1968 3.50 in — Jul 20, 1924
August 98.1°F — Aug 19, 1981 18.0°F — Aug 28, 1960 1.87 in — Aug 11, 1930
September 93.0°F — Sep 9, 1934 5.0°F — Sep 26, 1926 2.30 in — Sep 10, 1927
October 87.1°F — Oct 1, 1997 -9.0°F — Oct 26, 2020 1.25 in — Oct 17, 1938
November 66.9°F — Nov 3, 1921 -29.0°F — Nov 30, 2004 2.50 in — Nov 15, 1924
December 66.0°F — Dec 17, 1906 -52.1°F — Dec 20, 1924 1.90 in — Dec 31, 1931

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