All-time weather records — Spearfish, SD

Record high
109.9°F
July 6, 1936
Record low
-62.0°F
February 11, 1894
Wettest day
20.70 in
October 13, 1893

Climate change signal in Spearfish

4.9%

of Spearfish's all-time daily heat records were set in the last decade (18 of 366 records since 2015).

6%

of all-time daily cold records were set in the last decade (22 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 #
1890s
18
17
1900s
24
46
1910s
18
41
1920s
31
67
1930s
83
23
1940s
17
30
1950s
27
25
1960s
24
38
1970s
21
12
1980s
22
27
1990s
15
15
2000s
33
1
2010s
25
10
2020s
8
14

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 1893, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 79.0°F — Jan 19, 1921 -32.1°F — Jan 4, 1950 1.98 in — Jan 27, 1944
February 75.0°F — Feb 22, 1982 -62.0°F — Feb 11, 1894 1.65 in — Feb 2, 1924
March 82.0°F — Mar 22, 1910 -35.0°F — Mar 25, 1913 5.00 in — Mar 22, 1894
April 91.0°F — Apr 22, 1980 -8.0°F — Apr 4, 1920 3.55 in — Apr 19, 1903
May 96.1°F — May 14, 2001 10.0°F — May 4, 1988 6.49 in — May 11, 1922
June 105.1°F — Jun 11, 1893 25.0°F — Jun 3, 1951 6.46 in — Jun 15, 1976
July 109.9°F — Jul 6, 1936 33.1°F — Jul 15, 1906 3.45 in — Jul 29, 1932
August 104.0°F — Aug 1, 1900 32.0°F — Aug 24, 1985 3.65 in — Aug 3, 1922
September 105.1°F — Sep 7, 1978 15.1°F — Sep 25, 1926 3.00 in — Sep 28, 1923
October 95.0°F — Oct 15, 1908 -7.1°F — Oct 26, 2020 20.70 in — Oct 13, 1893
November 84.9°F — Nov 18, 1908 -29.0°F — Nov 15, 1916 2.84 in — Nov 1, 2000
December 73.0°F — Dec 2, 1920 -31.0°F — Dec 28, 1983 2.00 in — Dec 16, 1921

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