All-time weather records — Superior, WY

Record high
98.1°F
July 13, 2002
Record low
-36.9°F
January 12, 1963
Wettest day
2.00 in
September 11, 1973

Climate change signal in Superior

26.8%

of Superior's all-time daily heat records were set in the last decade (98 of 366 records since 2015).

9%

of all-time daily cold records were set in the last decade (33 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 #
1940s
5
12
1950s
22
54
1960s
25
81
1970s
46
81
1980s
49
31
1990s
26
33
2000s
64
23
2010s
53
28
2020s
76
23

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 1948, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 55.0°F — Jan 7, 1969 -36.9°F — Jan 12, 1963 0.83 in — Jan 17, 1996
February 60.1°F — Feb 20, 1977 -29.0°F — Feb 7, 1989 0.59 in — Feb 7, 2001
March 78.1°F — Mar 25, 2026 -11.9°F — Mar 11, 1969 1.66 in — Mar 7, 1962
April 79.0°F — Apr 20, 1989 1.9°F — Apr 2, 1975 1.96 in — Apr 20, 1971
May 90.0°F — May 31, 2002 14.0°F — May 1, 1967 1.71 in — May 30, 1971
June 96.1°F — Jun 23, 1954 26.1°F — Jun 2, 1951 1.64 in — Jun 11, 1970
July 98.1°F — Jul 13, 2002 35.1°F — Jul 1, 1968 1.42 in — Jul 24, 1991
August 96.1°F — Aug 3, 2024 33.1°F — Aug 31, 1962 1.17 in — Aug 2, 2007
September 93.0°F — Sep 4, 2022 5.0°F — Sep 18, 1965 2.00 in — Sep 11, 1973
October 84.9°F — Oct 28, 2007 -9.8°F — Oct 26, 2020 0.96 in — Oct 3, 1994
November 66.0°F — Nov 4, 1977 -13.0°F — Nov 27, 1976 0.95 in — Nov 1, 2011
December 59.0°F — Dec 22, 2025 -29.0°F — Dec 21, 1990 0.94 in — Dec 12, 1975

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