All-time weather records — Decatur, TN

Record high
107.1°F
July 1, 2012
Record low
-9.0°F
January 17, 2024
Wettest day
8.02 in
September 6, 2011

Climate change signal in Decatur

39.3%

of Decatur's all-time daily heat records were set in the last decade (144 of 366 records since 2015).

26%

of all-time daily cold records were set in the last decade (95 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
42
48
2000s
121
156
2010s
145
108
2020s
58
54

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 1997, the latest in 2026. Period of observation: 1997-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 77.0°F — Jan 2, 2022 -9.0°F — Jan 17, 2024 3.02 in — Jan 3, 2020
February 81.0°F — Feb 22, 2018 1.0°F — Feb 19, 2015 4.62 in — Feb 6, 2020
March 86.0°F — Mar 26, 2007 10.0°F — Mar 1, 2002 4.21 in — Mar 18, 2002
April 88.0°F — Apr 19, 2002 19.0°F — Apr 8, 2007 3.98 in — Apr 13, 2020
May 93.0°F — May 31, 2006 30.9°F — May 4, 2004 3.67 in — May 14, 2012
June 106.0°F — Jun 30, 2012 43.0°F — Jun 7, 1998 4.02 in — Jun 29, 2000
July 107.1°F — Jul 1, 2012 50.0°F — Jul 1, 2008 4.36 in — Jul 21, 2023
August 106.0°F — Aug 17, 2007 28.9°F — Aug 8, 1997 3.85 in — Aug 29, 2006
September 100.9°F — Sep 4, 2011 35.1°F — Sep 23, 1999 8.02 in — Sep 6, 2011
October 99.0°F — Oct 3, 2019 21.9°F — Oct 26, 2013 3.08 in — Oct 29, 2020
November 87.1°F — Nov 1, 2016 10.9°F — Nov 19, 2014 3.66 in — Nov 28, 2011
December 75.0°F — Dec 12, 2007 5.0°F — Dec 24, 2022 3.87 in — Dec 9, 2009

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