All-time weather records — Chelsea, MI

Record high
100.9°F
July 7, 2012
Record low
-25.1°F
February 20, 2015
Wettest day
6.15 in
July 28, 2011

Climate change signal in Chelsea

51.1%

of Chelsea's all-time daily heat records were set in the last decade (187 of 366 records since 2015).

37.4%

of all-time daily cold records were set in the last decade (137 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 #
1970s
·
·
1980s
·
·
1990s
·
·
2000s
99
143
2010s
158
162
2020s
109
61

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 2002, the latest in 2026. Period of observation: 1978-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 62.1°F — Jan 8, 2008 -20.9°F — Jan 24, 2026 1.78 in — Jan 11, 2020
February 72.0°F — Feb 28, 2024 -25.1°F — Feb 20, 2015 2.10 in — Feb 6, 1982
March 87.1°F — Mar 23, 2012 -9.9°F — Mar 3, 2003 2.00 in — Mar 28, 1997
April 86.0°F — Apr 16, 2002 15.1°F — Apr 5, 2016 1.72 in — Apr 23, 2022
May 95.0°F — May 29, 2018 25.0°F — May 4, 2005 2.82 in — May 10, 2006
June 99.0°F — Jun 29, 2012 37.9°F — Jun 1, 2003 2.72 in — Jun 22, 1989
July 100.9°F — Jul 7, 2012 44.1°F — Jul 1, 2007 6.15 in — Jul 28, 2011
August 96.1°F — Aug 4, 2012 41.0°F — Aug 30, 2025 3.25 in — Aug 22, 1987
September 93.9°F — Sep 24, 2017 30.9°F — Sep 19, 2020 2.53 in — Sep 14, 2008
October 88.0°F — Oct 5, 2025 21.9°F — Oct 30, 2008 2.42 in — Oct 5, 2013
November 78.1°F — Nov 10, 2020 0.0°F — Nov 13, 2019 1.63 in — Nov 30, 2006
December 62.1°F — Dec 13, 2015 -16.1°F — Dec 28, 2017 1.39 in — Dec 11, 2000

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