All-time weather records — Flandreau, SD

Record high
111.9°F
July 24, 1940
Record low
-40.0°F
January 1, 1974
Wettest day
7.16 in
May 31, 2004

Climate change signal in Flandreau

6.3%

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

3.8%

of all-time daily cold records were set in the last decade (14 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
42
40
1900s
18
31
1910s
19
42
1920s
36
50
1930s
80
32
1940s
22
16
1950s
31
21
1960s
20
27
1970s
11
41
1980s
23
16
1990s
15
15
2000s
17
5
2010s
13
23
2020s
19
7

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 1894, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 64.0°F — Jan 25, 1981 -40.0°F — Jan 1, 1974 1.17 in — Jan 30, 2001
February 70.0°F — Feb 23, 1958 -38.0°F — Feb 9, 1899 1.53 in — Mar 1, 2012
March 87.1°F — Mar 30, 1943 -24.0°F — Mar 11, 1948 2.22 in — Mar 14, 2019
April 93.9°F — Apr 25, 1962 -2.0°F — Apr 3, 1975 3.80 in — Apr 23, 2001
May 106.0°F — May 30, 1934 16.0°F — May 11, 1946 7.16 in — May 31, 2004
June 105.1°F — Jun 22, 1988 28.9°F — Jun 7, 1901 7.09 in — Jun 16, 1957
July 111.9°F — Jul 24, 1940 32.0°F — Jul 2, 1918 4.82 in — Jul 28, 1942
August 108.0°F — Aug 24, 1936 28.9°F — Aug 11, 1912 4.57 in — Aug 11, 1932
September 104.0°F — Sep 17, 1895 15.1°F — Sep 29, 1899 4.71 in — Sep 24, 1934
October 93.9°F — Oct 2, 1897 -11.9°F — Oct 29, 1925 2.79 in — Oct 7, 2008
November 79.0°F — Nov 4, 1909 -20.0°F — Nov 30, 1964 1.57 in — Nov 18, 1958
December 64.9°F — Dec 2, 1922 -35.0°F — Dec 18, 2016 1.31 in — Dec 26, 2016

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