All-time weather records — Custer, SD

Record high
100.0°F
July 12, 1954
Record low
-43.1°F
January 19, 1963
Wettest day
7.10 in
April 17, 1920

Climate change signal in Custer

8.5%

of Custer's all-time daily heat records were set in the last decade (31 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 #
1910s
·
·
1920s
·
·
1930s
·
·
1940s
23
42
1950s
58
90
1960s
69
101
1970s
41
32
1980s
45
31
1990s
47
20
2000s
39
12
2010s
27
7
2020s
17
31

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 1943, the latest in 2026. Period of observation: 1911-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 24, 1981 -43.1°F — Jan 19, 1963 1.00 in — Jan 24, 1921
February 68.0°F — Feb 23, 1958 -34.1°F — Feb 28, 1962 3.05 in — Feb 22, 1924
March 77.0°F — Mar 22, 2026 -29.9°F — Mar 12, 1956 1.05 in — Mar 14, 1973
April 84.0°F — Apr 21, 1989 -15.0°F — Apr 20, 1966 7.10 in — Apr 17, 1920
May 90.0°F — May 28, 1969 5.0°F — May 3, 1954 4.03 in — May 22, 1952
June 97.0°F — Jun 23, 1954 19.0°F — Jun 1, 2022 3.45 in — Jun 10, 1972
July 100.0°F — Jul 12, 1954 25.0°F — Jul 6, 2025 3.65 in — Jul 11, 1930
August 96.1°F — Aug 8, 1975 21.9°F — Aug 22, 1966 3.50 in — Aug 27, 1933
September 97.0°F — Sep 3, 1971 8.1°F — Sep 30, 1961 2.15 in — Sep 30, 2014
October 84.9°F — Oct 1, 1963 -9.9°F — Oct 25, 2020 2.62 in — Oct 16, 1934
November 75.9°F — Nov 6, 1975 -25.1°F — Nov 27, 1952 2.00 in — Nov 5, 1922
December 68.0°F — Dec 19, 1979 -36.9°F — Dec 17, 1964 0.90 in — Dec 24, 1948

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