All-time weather records — Altoona, WI

Record high
100.9°F
September 3, 2023
Record low
-29.0°F
January 30, 2019
Wettest day
5.83 in
September 11, 2000

Climate change signal in Altoona

75.1%

of Altoona's all-time daily heat records were set in the last decade (275 of 366 records since 2015).

63.4%

of all-time daily cold records were set in the last decade (232 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 #
2000s
·
·
2010s
196
250
2020s
170
116

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 2011, the latest in 2026. Period of observation: 2000-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 54.0°F — Jan 10, 2012 -29.0°F — Jan 30, 2019 0.85 in — Jan 14, 2014
February 63.0°F — Feb 26, 2024 -23.1°F — Feb 15, 2021 0.95 in — Feb 24, 2019
March 81.0°F — Mar 17, 2012 -17.0°F — Mar 3, 2014 1.64 in — Mar 15, 2016
April 90.0°F — Apr 12, 2023 6.1°F — Apr 5, 2018 1.57 in — Apr 11, 2001
May 96.1°F — May 12, 2022 28.9°F — May 4, 2011 1.94 in — May 27, 2019
June 98.1°F — Jun 5, 2021 41.0°F — Jun 12, 2011 4.16 in — Jun 18, 2011
July 100.0°F — Jul 6, 2012 48.0°F — Jul 27, 2013 3.12 in — Jul 25, 2006
August 99.0°F — Aug 23, 2023 45.0°F — Aug 20, 2012 4.21 in — Aug 21, 2002
September 100.9°F — Sep 3, 2023 32.0°F — Sep 28, 2022 5.83 in — Sep 11, 2000
October 91.0°F — Oct 1, 2023 16.0°F — Oct 27, 2020 2.24 in — Oct 24, 2023
November 77.0°F — Nov 3, 2020 -2.0°F — Nov 21, 2014 1.32 in — Nov 11, 2015
December 60.1°F — Dec 15, 2021 -16.1°F — Dec 18, 2016 1.75 in — Dec 14, 2015

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