All-time weather records — Afton, WY

Record high
97.0°F
July 15, 2002
Record low
-45.9°F
January 1, 1979
Wettest day
2.06 in
August 9, 2008

Climate change signal in Afton

14.8%

of Afton's all-time daily heat records were set in the last decade (54 of 366 records since 2015).

6.8%

of all-time daily cold records were set in the last decade (25 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 #
1950s
14
17
1960s
59
85
1970s
47
101
1980s
65
80
1990s
71
39
2000s
47
13
2010s
30
16
2020s
33
15

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 1957, the latest in 2026. Period of observation: 1957-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 19, 1987 -45.9°F — Jan 1, 1979 0.84 in — Jan 14, 1980
February 55.9°F — Feb 20, 1958 -40.0°F — Feb 5, 1982 0.95 in — Feb 8, 1960
March 73.0°F — Mar 22, 2026 -22.0°F — Mar 5, 1976 1.10 in — Mar 18, 1984
April 78.1°F — Apr 23, 1977 -2.9°F — Apr 2, 1975 1.16 in — Apr 8, 2017
May 87.1°F — May 30, 2003 9.0°F — May 2, 1988 1.60 in — May 10, 1966
June 93.9°F — Jun 24, 1988 19.0°F — Jun 18, 1976 1.71 in — Jun 7, 1964
July 97.0°F — Jul 15, 2002 26.1°F — Jul 8, 1981 1.40 in — Jul 14, 2012
August 96.1°F — Aug 1, 2000 21.0°F — Aug 21, 1974 2.06 in — Aug 9, 2008
September 93.0°F — Sep 5, 1967 10.9°F — Sep 20, 1983 1.51 in — Sep 23, 1984
October 82.9°F — Oct 1, 1992 -7.1°F — Oct 30, 2019 1.24 in — Oct 9, 2021
November 70.0°F — Nov 6, 1976 -22.0°F — Nov 30, 1979 1.25 in — Nov 17, 2025
December 66.0°F — Dec 11, 1995 -38.0°F — Dec 11, 1972 2.04 in — Dec 20, 2007

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