All-time weather records — Riley, IN

Record high
106.0°F
June 28, 2012
Record low
-17.0°F
January 31, 2004
Wettest day
5.71 in
May 12, 2002

Climate change signal in Riley

36.6%

of Riley's all-time daily heat records were set in the last decade (134 of 366 records since 2015).

30.3%

of all-time daily cold records were set in the last decade (111 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 #
1960s
9
8
1990s
33
26
2000s
89
146
2010s
149
124
2020s
86
62

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 1961, the latest in 2026. Period of observation: 1961-2025.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 2, 2006 -17.0°F — Jan 31, 2004 2.27 in — Jan 10, 2020
February 75.0°F — Feb 25, 2000 -15.9°F — Feb 11, 2014 2.25 in — Feb 7, 1999
March 84.9°F — Mar 21, 2012 -5.8°F — Mar 6, 2015 2.10 in — Mar 3, 2023
April 87.1°F — Apr 15, 2024 20.1°F — Apr 2, 2021 2.84 in — Apr 4, 2025
May 98.1°F — May 12, 1998 28.9°F — May 4, 2005 5.71 in — May 12, 2002
June 106.0°F — Jun 28, 2012 37.0°F — Jun 1, 2003 5.38 in — Jun 7, 2008
July 106.0°F — Jul 5, 2012 45.0°F — Jul 6, 2001 2.56 in — Jul 9, 2003
August 100.0°F — Aug 2, 2012 43.0°F — Aug 12, 2004 2.71 in — Aug 31, 2003
September 98.1°F — Sep 2, 2011 33.1°F — Sep 22, 1999 3.13 in — Sep 8, 2007
October 93.0°F — Oct 1, 2019 24.3°F — Oct 18, 2015 2.48 in — Oct 2, 2014
November 80.1°F — Nov 8, 2020 4.1°F — Nov 12, 2019 2.14 in — Nov 15, 2005
December 73.0°F — Dec 6, 1998 -11.0°F — Dec 25, 2000 2.29 in — Dec 21, 2013

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