All-time weather records — Portage, WI

Record high
111.0°F
July 14, 1936
Record low
-36.9°F
February 1, 1918
Wettest day
7.50 in
August 28, 2020

Climate change signal in Portage

9.8%

of Portage's all-time daily heat records were set in the last decade (36 of 366 records since 2015).

0.8%

of all-time daily cold records were set in the last decade (3 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 #
1880s
·
·
1890s
4
17
1900s
18
20
1910s
38
25
1920s
28
12
1930s
72
14
1940s
13
10
1950s
31
15
1960s
15
68
1970s
14
119
1980s
31
43
1990s
21
15
2000s
27
4
2010s
30
4
2020s
24
·

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 1896, the latest in 2026. Period of observation: 1889-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 57.9°F — Jan 31, 2025 -35.0°F — Jan 15, 1963 1.32 in — Jan 24, 1967
February 72.0°F — Feb 28, 2024 -36.9°F — Feb 1, 1918 1.88 in — Feb 23, 1922
March 82.9°F — Mar 29, 1910 -25.1°F — Mar 1, 1962 3.55 in — Mar 31, 1998
April 99.0°F — Apr 19, 1985 5.0°F — Apr 7, 1982 3.00 in — Apr 4, 1999
May 102.0°F — May 31, 1934 19.9°F — May 10, 1966 3.71 in — May 18, 2000
June 104.0°F — Jun 23, 1911 28.9°F — Jun 10, 1972 6.21 in — Jun 8, 2008
July 111.0°F — Jul 14, 1936 35.1°F — Jul 1, 1925 5.50 in — Jul 15, 2010
August 102.9°F — Aug 2, 1988 33.1°F — Aug 29, 1965 7.50 in — Aug 28, 2020
September 102.9°F — Sep 6, 1922 17.1°F — Sep 22, 1974 4.02 in — Sep 13, 1961
October 93.0°F — Oct 6, 1963 8.1°F — Oct 30, 1925 3.33 in — Oct 23, 2020
November 75.9°F — Nov 1, 1933 -9.9°F — Nov 29, 1976 2.32 in — Nov 4, 2003
December 66.9°F — Dec 16, 2021 -24.0°F — Dec 24, 1983 1.81 in — Dec 2, 1921

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