All-time weather records — Somersworth, NH

Record high
100.0°F
June 24, 2025
Record low
-14.8°F
January 16, 2009
Wettest day
5.21 in
October 8, 2005

Climate change signal in Somersworth

52.7%

of Somersworth's all-time daily heat records were set in the last decade (193 of 366 records since 2015).

32.8%

of all-time daily cold records were set in the last decade (120 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 #
2000s
119
194
2010s
125
127
2020s
122
45

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 2000, the latest in 2026. Period of observation: 2000-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 6, 2007 -14.8°F — Jan 16, 2009 1.85 in — Jan 10, 2024
February 75.0°F — Feb 21, 2018 -12.8°F — Feb 4, 2023 2.37 in — Feb 13, 2008
March 84.9°F — Mar 22, 2012 -4.9°F — Mar 9, 2007 3.53 in — Mar 30, 2010
April 93.0°F — Apr 17, 2002 15.3°F — Apr 5, 2016 4.35 in — Apr 16, 2007
May 95.0°F — May 26, 2010 27.1°F — May 1, 2008 4.05 in — May 13, 2006
June 100.0°F — Jun 24, 2025 33.1°F — Jun 1, 2020 2.57 in — Jun 2, 2012
July 100.0°F — Jul 22, 2011 45.0°F — Jul 3, 2001 3.23 in — Jul 24, 2008
August 100.0°F — Aug 4, 2022 39.9°F — Aug 22, 2007 2.98 in — Aug 13, 2014
September 96.1°F — Sep 9, 2002 28.0°F — Sep 29, 2000 3.49 in — Sep 6, 2008
October 87.1°F — Oct 3, 2023 19.2°F — Oct 31, 2020 5.21 in — Oct 8, 2005
November 81.0°F — Nov 6, 2024 6.1°F — Nov 25, 2000 2.19 in — Nov 25, 2008
December 72.0°F — Dec 6, 2001 -11.7°F — Dec 29, 2017 2.23 in — Dec 14, 2019

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