All-time weather records — Harrisburg, PA

Record high
104.0°F
July 8, 2012
Record low
-6.0°F
February 5, 2007
Wettest day
6.05 in
October 11, 2013

Climate change signal in Harrisburg

41.8%

of Harrisburg's all-time daily heat records were set in the last decade (153 of 366 records since 2015).

41.5%

of all-time daily cold records were set in the last decade (152 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 #
1990s
20
6
2000s
130
149
2010s
120
134
2020s
96
77

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 1998, the latest in 2026. Period of observation: 1998-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 12, 2020 -5.1°F — Jan 19, 2000 2.25 in — Jan 10, 2024
February 77.0°F — Feb 22, 2018 -6.0°F — Feb 5, 2007 4.60 in — Feb 25, 2005
March 82.9°F — Mar 30, 2025 3.9°F — Mar 8, 2007 2.77 in — Mar 5, 2008
April 90.0°F — Apr 18, 2002 21.9°F — Apr 20, 2022 4.75 in — Apr 17, 2011
May 91.9°F — May 3, 2024 32.0°F — May 9, 2020 3.53 in — May 3, 2010
June 98.1°F — Jun 23, 2024 37.9°F — Jun 2, 2023 2.62 in — Jun 26, 2006
July 104.0°F — Jul 8, 2012 46.0°F — Jul 29, 2017 3.43 in — Jul 5, 2018
August 99.0°F — Aug 1, 1999 42.1°F — Aug 25, 1999 4.76 in — Aug 5, 2017
September 93.9°F — Sep 2, 2010 24.1°F — Sep 25, 2008 5.50 in — Sep 18, 2004
October 90.0°F — Oct 3, 2019 23.0°F — Oct 26, 2006 6.05 in — Oct 11, 2013
November 81.0°F — Nov 1, 2024 14.0°F — Nov 20, 2022 2.40 in — Nov 22, 2023
December 72.0°F — Dec 2, 2006 3.0°F — Dec 24, 2022 2.22 in — Dec 12, 2008

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