All-time weather records — Rushmore, MN

Record high
104.0°F
August 1, 1988
Record low
-31.0°F
January 2, 2010
Wettest day
5.61 in
September 23, 2010

Climate change signal in Rushmore

22.1%

of Rushmore's all-time daily heat records were set in the last decade (81 of 366 records since 2015).

11.7%

of all-time daily cold records were set in the last decade (43 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 #
1970s
45
97
1980s
85
100
1990s
50
59
2000s
67
32
2010s
55
54
2020s
64
24

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 1972, the latest in 2026. Period of observation: 1971-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 63.0°F — Jan 25, 1981 -31.0°F — Jan 2, 2010 1.36 in — Jan 11, 1975
February 66.0°F — Feb 26, 2024 -29.9°F — Feb 2, 1996 1.60 in — Mar 1, 2012
March 84.9°F — Mar 21, 2026 -20.0°F — Mar 3, 2019 1.96 in — Mar 23, 1987
April 91.0°F — Apr 22, 1980 3.9°F — Apr 4, 2018 3.55 in — Apr 23, 2001
May 99.0°F — May 28, 2018 23.0°F — May 3, 2005 2.58 in — May 27, 2019
June 102.9°F — Jun 22, 1988 31.1°F — Jun 28, 2024 4.43 in — Jun 21, 2018
July 102.9°F — Jul 10, 1976 36.0°F — Jul 4, 2008 3.51 in — Jul 4, 1978
August 104.0°F — Aug 1, 1988 36.0°F — Aug 21, 2004 4.80 in — Aug 10, 1994
September 100.9°F — Sep 7, 1976 24.1°F — Sep 22, 1974 5.61 in — Sep 23, 2010
October 93.0°F — Oct 1, 2023 9.1°F — Oct 26, 2020 3.50 in — Oct 3, 2017
November 79.0°F — Nov 14, 1999 -11.9°F — Nov 27, 2014 1.95 in — Nov 10, 1982
December 64.0°F — Dec 4, 1998 -27.9°F — Dec 19, 1983 1.39 in — Dec 28, 1982

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