All-time weather records — Cornell, WI

Record high
100.0°F
August 1, 1988
Record low
-45.0°F
February 1, 1996
Wettest day
5.85 in
July 9, 1959

Climate change signal in Cornell

16.7%

of Cornell's all-time daily heat records were set in the last decade (61 of 366 records since 2015).

3.3%

of all-time daily cold records were set in the last decade (12 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 #
1920s
·
·
1930s
·
·
1940s
42
95
1950s
37
63
1960s
41
64
1970s
42
52
1980s
58
26
1990s
35
28
2000s
30
16
2010s
36
19
2020s
45
3

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 1942, the latest in 2026. Period of observation: 1929-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 53.1°F — Jan 24, 1942 -44.0°F — Jan 9, 1977 1.81 in — Jan 25, 1967
February 60.1°F — Feb 28, 2024 -45.0°F — Feb 1, 1996 1.25 in — Feb 24, 1930
March 81.0°F — Mar 30, 1986 -40.0°F — Mar 1, 1962 1.90 in — Mar 16, 2016
April 90.0°F — Apr 29, 1970 1.0°F — Apr 4, 1975 3.00 in — Apr 28, 1975
May 93.9°F — May 2, 1959 19.9°F — May 9, 1947 3.79 in — May 30, 1942
June 95.0°F — Jun 13, 1956 27.0°F — Jun 4, 1945 3.65 in — Jun 17, 1979
July 99.0°F — Jul 15, 1988 36.0°F — Jul 22, 1947 5.85 in — Jul 9, 1959
August 100.0°F — Aug 1, 1988 26.1°F — Aug 2, 1999 5.70 in — Aug 28, 1960
September 95.0°F — Sep 7, 1976 17.1°F — Sep 26, 1947 4.68 in — Sep 6, 1958
October 89.1°F — Oct 1, 1976 10.9°F — Oct 3, 2008 2.83 in — Oct 15, 1966
November 75.0°F — Nov 1, 1944 -16.1°F — Nov 30, 1976 2.90 in — Nov 10, 1975
December 62.1°F — Dec 5, 2001 -38.9°F — Dec 19, 1983 1.50 in — Dec 15, 1990

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