All-time weather records — Leominster, MA

Record high
102.9°F
July 22, 2011
Record low
-78.0°F
August 6, 2001
Wettest day
5.10 in
September 11, 2023

Climate change signal in Leominster

44%

of Leominster's all-time daily heat records were set in the last decade (161 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 #
1990s
22
23
2000s
116
166
2010s
134
111
2020s
94
66

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 1998, the latest in 2026. Period of observation: 1997-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 12, 2020 -13.0°F — Jan 31, 2026 1.61 in — Jan 24, 2019
February 80.1°F — Feb 21, 2018 -14.8°F — Feb 24, 2015 2.79 in — Feb 13, 2008
March 89.1°F — Mar 31, 1998 -11.9°F — Mar 7, 2003 3.10 in — Mar 14, 2010
April 93.9°F — Apr 14, 2023 15.3°F — Apr 6, 2016 2.67 in — Apr 1, 2004
May 98.1°F — May 26, 2010 28.9°F — May 7, 2001 2.26 in — May 31, 1998
June 100.0°F — Jun 24, 2025 36.0°F — Jun 1, 2009 3.22 in — Jun 6, 2000
July 102.9°F — Jul 22, 2011 46.9°F — Jul 31, 2001 2.37 in — Jul 16, 2023
August 100.0°F — Aug 2, 2006 -78.0°F — Aug 6, 2001 3.18 in — Aug 28, 2011
September 96.1°F — Sep 8, 2015 28.0°F — Sep 29, 2000 5.10 in — Sep 11, 2023
October 87.1°F — Oct 5, 2007 15.3°F — Oct 31, 2020 3.75 in — Oct 8, 2005
November 80.1°F — Nov 6, 2024 7.2°F — Nov 22, 2018 2.16 in — Nov 14, 2009
December 73.9°F — Dec 7, 1998 -6.9°F — Dec 23, 2008 2.20 in — Dec 23, 2022

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