All-time weather records — Grenville, SD

Record high
105.1°F
June 30, 1963
Record low
-43.1°F
February 9, 1994
Wettest day
4.20 in
June 29, 1971

Climate change signal in Grenville

6.3%

of Grenville's all-time daily heat records were set in the last decade (23 of 366 records since 2015).

4.9%

of all-time daily cold records were set in the last decade (18 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
54
46
1960s
63
85
1970s
73
85
1980s
76
52
1990s
44
48
2000s
25
19
2010s
18
25
2020s
13
6

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 1952, the latest in 2025. Period of observation: 1952-2025.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 28, 1989 -35.0°F — Jan 15, 1972 1.45 in — Jan 4, 1997
February 63.0°F — Feb 25, 1958 -43.1°F — Feb 9, 1994 0.90 in — Mar 1, 2012
March 79.0°F — Mar 31, 1963 -25.1°F — Mar 1, 1962 1.38 in — Mar 12, 1977
April 93.9°F — Apr 21, 1980 -2.9°F — Apr 3, 1975 2.95 in — Apr 25, 1998
May 96.1°F — May 1, 1959 19.0°F — May 1, 1961 3.41 in — May 12, 1998
June 105.1°F — Jun 30, 1963 33.1°F — Jun 3, 1990 4.20 in — Jun 29, 1971
July 104.0°F — Jul 10, 1966 39.9°F — Jul 11, 1993 3.90 in — Jul 24, 1993
August 104.0°F — Aug 1, 1988 37.9°F — Aug 13, 1964 3.35 in — Aug 2, 1988
September 97.0°F — Sep 6, 1976 21.9°F — Sep 26, 1965 2.59 in — Sep 20, 2007
October 91.0°F — Oct 6, 1993 8.1°F — Oct 30, 1984 3.01 in — Oct 16, 1998
November 75.0°F — Nov 5, 1975 -23.1°F — Nov 29, 1985 0.95 in — Nov 8, 1970
December 57.9°F — Dec 1, 1969 -35.0°F — Dec 24, 1989 1.20 in — Dec 22, 2006

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