All-time weather records — Norwich, CT

Record high
102.0°F
August 10, 2001
Record low
-23.1°F
January 20, 1994
Wettest day
6.34 in
September 2, 2021

Climate change signal in Norwich

19.4%

of Norwich's all-time daily heat records were set in the last decade (71 of 366 records since 2015).

2.2%

of all-time daily cold records were set in the last decade (8 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 #
1950s
25
41
1960s
47
90
1970s
27
78
1980s
40
80
1990s
75
48
2000s
54
19
2010s
62
9
2020s
36
1

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 1956, the latest in 2026. Period of observation: 1956-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 13, 2020 -23.1°F — Jan 20, 1994 3.76 in — Jan 10, 2024
February 91.9°F — Feb 12, 1989 -17.0°F — Feb 5, 1996 2.89 in — Feb 14, 2008
March 84.9°F — Mar 31, 1998 -0.9°F — Mar 3, 1962 5.54 in — Mar 30, 2010
April 93.9°F — Apr 18, 2002 17.1°F — Apr 1, 1964 4.28 in — Apr 14, 2004
May 98.1°F — May 20, 1996 26.1°F — May 16, 1964 4.31 in — May 13, 2006
June 100.9°F — Jun 25, 2025 33.1°F — Jun 10, 1983 6.11 in — Jun 5, 1982
July 100.9°F — Jul 2, 2018 43.0°F — Jul 1, 1988 4.81 in — Jul 2, 2009
August 102.0°F — Aug 10, 2001 39.9°F — Aug 24, 1957 5.21 in — Aug 19, 1991
September 97.0°F — Sep 11, 1983 28.9°F — Sep 29, 1957 6.34 in — Sep 2, 2021
October 88.0°F — Oct 15, 1963 18.0°F — Oct 30, 1980 6.18 in — Oct 15, 2005
November 80.1°F — Nov 2, 2024 6.1°F — Nov 24, 1989 3.24 in — Nov 24, 2006
December 77.0°F — Dec 7, 1998 -13.0°F — Dec 26, 1980 4.52 in — Dec 11, 2023

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