All-time weather records — Charlestown, IN

Record high
108.0°F
July 8, 2012
Record low
-6.0°F
February 21, 2015
Wettest day
5.75 in
September 27, 2002

Climate change signal in Charlestown

69.7%

of Charlestown's all-time daily heat records were set in the last decade (255 of 366 records since 2015).

67.5%

of all-time daily cold records were set in the last decade (247 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 #
1940s
·
·
1950s
·
·
1960s
·
·
1970s
·
·
1980s
·
·
1990s
·
·
2000s
·
·
2010s
233
241
2020s
133
125

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: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 31, 2013 -5.1°F — Jan 21, 2024 3.26 in — Jan 23, 1982
February 82.0°F — Feb 21, 2018 -6.0°F — Feb 21, 2015 3.16 in — Feb 9, 1950
March 89.1°F — Mar 23, 2026 9.0°F — Mar 7, 2015 4.67 in — Mar 2, 1997
April 90.0°F — Apr 10, 2011 28.0°F — Apr 3, 2013 4.73 in — Apr 23, 2011
May 97.0°F — May 27, 2012 30.9°F — May 9, 2020 4.63 in — May 8, 1961
June 106.0°F — Jun 30, 2012 48.9°F — Jun 12, 2024 3.62 in — Jun 8, 1979
July 108.0°F — Jul 8, 2012 55.0°F — Jul 1, 2022 5.20 in — Jul 22, 1973
August 100.0°F — Aug 8, 2012 53.1°F — Aug 26, 2025 2.93 in — Aug 9, 1992
September 102.0°F — Sep 3, 2011 41.0°F — Sep 14, 2014 5.75 in — Sep 27, 2002
October 96.1°F — Oct 1, 2019 27.0°F — Oct 31, 2017 4.75 in — Oct 6, 2013
November 82.9°F — Nov 2, 2016 14.0°F — Nov 13, 2019 2.95 in — Nov 14, 1957
December 75.9°F — Dec 27, 2016 -5.1°F — Dec 24, 2022 3.10 in — Dec 22, 2013

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