All-time weather records — Summerset, SD

Record high
107.1°F
July 6, 1973
Record low
-29.0°F
December 22, 1989
Wettest day
4.00 in
June 3, 1999

Climate change signal in Summerset

15.8%

of Summerset's all-time daily heat records were set in the last decade (58 of 366 records since 2015).

13.4%

of all-time daily cold records were set in the last decade (49 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
7
·
1950s
53
44
1960s
47
35
1970s
45
48
1980s
75
51
1990s
35
64
2000s
30
59
2010s
31
36
2020s
43
29

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 1949, the latest in 2026. Period of observation: 1949-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 73.0°F — Jan 12, 1987 -25.1°F — Jan 14, 1979 0.70 in — Jan 9, 1993
February 78.1°F — Feb 27, 1988 -27.9°F — Feb 2, 1996 0.71 in — Feb 9, 1953
March 82.0°F — Mar 20, 2026 -18.9°F — Mar 9, 1996 1.80 in — Mar 16, 1963
April 90.0°F — Apr 21, 1980 -0.9°F — Apr 3, 2020 2.44 in — Apr 8, 2024
May 99.0°F — May 27, 1969 0.0°F — May 4, 2002 3.00 in — May 29, 2019
June 106.0°F — Jun 27, 2012 0.0°F — Jun 1, 2002 4.00 in — Jun 3, 1999
July 107.1°F — Jul 6, 1973 39.0°F — Jul 3, 1995 2.64 in — Jul 25, 1981
August 104.0°F — Aug 19, 1974 37.9°F — Aug 30, 1992 2.68 in — Aug 12, 1986
September 102.9°F — Sep 2, 1960 0.0°F — Sep 1, 2002 3.07 in — Sep 14, 1998
October 93.9°F — Oct 4, 2025 -4.0°F — Oct 27, 2020 2.70 in — Oct 9, 1997
November 82.9°F — Nov 8, 1999 -17.0°F — Nov 23, 1985 3.50 in — Nov 27, 1989
December 73.9°F — Dec 3, 2021 -29.0°F — Dec 22, 1989 0.60 in — Dec 4, 1960

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