All-time weather records — Irmo, SC

Record high
107.1°F
June 30, 2012
Record low
-5.1°F
January 16, 1994
Wettest day
7.45 in
October 4, 2015

Climate change signal in Irmo

23%

of Irmo's all-time daily heat records were set in the last decade (84 of 366 records since 2015).

14.5%

of all-time daily cold records were set in the last decade (53 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
102
158
2000s
117
118
2010s
119
59
2020s
28
31

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 1993, the latest in 2026. Period of observation: 1993-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 82.0°F — Jan 31, 2002 -5.1°F — Jan 16, 1994 1.93 in — Jan 24, 1999
February 84.0°F — Feb 28, 1996 5.0°F — Feb 5, 1996 2.36 in — Feb 7, 2020
March 89.1°F — Mar 24, 1995 8.1°F — Mar 1, 2002 3.12 in — Mar 2, 2007
April 93.0°F — Apr 11, 2001 19.0°F — Apr 8, 2007 2.80 in — Apr 24, 2017
May 99.0°F — May 26, 2000 32.0°F — May 5, 1997 5.00 in — May 20, 2016
June 107.1°F — Jun 30, 2012 42.1°F — Jun 1, 1996 4.14 in — Jun 14, 2006
July 106.0°F — Jul 1, 2012 52.0°F — Jul 2, 2008 4.36 in — Jul 24, 1997
August 106.0°F — Aug 11, 2007 41.0°F — Aug 9, 2002 4.05 in — Aug 13, 2008
September 99.0°F — Sep 2, 1993 34.0°F — Sep 30, 1993 5.93 in — Sep 27, 2024
October 98.1°F — Oct 4, 2019 21.9°F — Oct 29, 1993 7.45 in — Oct 4, 2015
November 84.0°F — Nov 4, 2017 1.9°F — Nov 1, 1993 2.58 in — Nov 11, 2009
December 81.0°F — Dec 6, 1998 1.0°F — Dec 12, 1993 3.80 in — Dec 23, 1994

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