All-time weather records — Sparta, WI

Record high
106.0°F
July 12, 1936
Record low
-47.9°F
January 30, 1951
Wettest day
5.42 in
September 14, 1994

Climate change signal in Sparta

10.4%

of Sparta's all-time daily heat records were set in the last decade (38 of 366 records since 2015).

5.7%

of all-time daily cold records were set in the last decade (21 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
1
9
1910s
2
18
1930s
48
9
1940s
50
37
1950s
32
54
1960s
25
70
1970s
20
80
1980s
36
27
1990s
39
23
2000s
43
11
2010s
46
22
2020s
24
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 1893, the latest in 2024. Period of observation: 1893-2024.

Records by month

Month Hottest day Coldest day Wettest day
January 57.0°F — Jan 25, 1944 -47.9°F — Jan 30, 1951 1.23 in — Jan 25, 1967
February 66.9°F — Feb 28, 2024 -41.1°F — Feb 3, 1996 1.50 in — Feb 19, 1984
March 84.0°F — Mar 30, 1986 -29.9°F — Mar 1, 1962 2.00 in — Mar 16, 1983
April 91.9°F — Apr 23, 1980 -0.9°F — Apr 6, 1982 3.80 in — Apr 25, 1994
May 95.0°F — May 28, 2018 21.0°F — May 10, 1966 3.25 in — May 20, 2022
June 100.0°F — Jun 21, 1988 30.0°F — Jun 4, 1945 3.91 in — Jun 8, 2008
July 106.0°F — Jul 12, 1936 39.9°F — Jul 3, 1968 4.55 in — Jul 1, 1978
August 102.9°F — Aug 24, 2023 34.0°F — Aug 14, 1964 4.22 in — Aug 28, 2018
September 99.0°F — Sep 23, 1937 19.0°F — Sep 29, 1967 5.42 in — Sep 14, 1994
October 90.0°F — Oct 2, 1976 10.0°F — Oct 19, 1972 2.47 in — Oct 7, 2017
November 78.1°F — Nov 1, 1938 -18.0°F — Nov 27, 1977 2.13 in — Nov 1, 1984
December 66.9°F — Dec 16, 2021 -35.0°F — Dec 27, 1950 2.30 in — Dec 14, 2015

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