All-time weather records — Reliance, SD

Record high
118.9°F
July 5, 1936
Record low
-45.0°F
February 9, 1899
Wettest day
4.45 in
May 17, 1898

Climate change signal in Reliance

6.6%

of Reliance's all-time daily heat records were set in the last decade (24 of 366 records since 2015).

2.2%

of all-time daily cold records were set in the last decade (8 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
10
43
1900s
19
36
1910s
17
51
1920s
24
44
1930s
97
23
1940s
22
22
1950s
29
34
1960s
17
36
1970s
18
13
1980s
24
21
1990s
22
20
2000s
29
8
2010s
22
14
2020s
16
1

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 70.0°F — Jan 5, 2012 -42.0°F — Jan 12, 1912 2.40 in — Jan 9, 1939
February 75.9°F — Feb 27, 2016 -45.0°F — Feb 9, 1899 1.04 in — Feb 23, 1977
March 91.0°F — Mar 22, 1910 -27.9°F — Mar 4, 1960 1.80 in — Mar 12, 1977
April 99.0°F — Apr 21, 1980 -7.1°F — Apr 3, 1936 2.33 in — Apr 26, 1964
May 108.0°F — May 28, 1934 10.9°F — May 1, 1909 4.45 in — May 17, 1898
June 111.9°F — Jun 28, 1931 28.0°F — Jun 2, 1969 3.22 in — Jun 3, 1997
July 118.9°F — Jul 5, 1936 35.1°F — Jul 30, 1971 3.20 in — Jul 18, 2018
August 114.1°F — Aug 13, 1965 32.0°F — Aug 30, 1935 3.73 in — Aug 30, 1999
September 109.9°F — Sep 9, 1904 10.9°F — Sep 25, 1926 3.51 in — Sep 2, 2021
October 100.9°F — Oct 4, 1922 -18.9°F — Oct 29, 1925 3.23 in — Oct 19, 1908
November 89.1°F — Nov 8, 1999 -23.1°F — Nov 14, 1959 2.05 in — Nov 28, 2005
December 73.9°F — Dec 1, 1998 -35.0°F — Dec 20, 1916 1.31 in — Dec 13, 2022

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