All-time weather records — Concord, NH

Record high
102.0°F
July 3, 1966
Record low
-36.9°F
February 16, 1943
Wettest day
5.12 in
May 13, 2006

Climate change signal in Concord

16.9%

of Concord's all-time daily heat records were set in the last decade (62 of 366 records since 2015).

3%

of all-time daily cold records were set in the last decade (11 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 #
1930s
4
17
1940s
46
60
1950s
36
38
1960s
36
76
1970s
44
93
1980s
22
32
1990s
47
21
2000s
45
15
2010s
47
9
2020s
39
5

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 1939, the latest in 2026. Period of observation: 1939-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 6, 2007 -33.0°F — Jan 22, 1984 1.98 in — Jan 11, 1983
February 73.9°F — Feb 21, 2018 -36.9°F — Feb 16, 1943 2.91 in — Feb 13, 2008
March 89.1°F — Mar 31, 1998 -16.1°F — Mar 9, 1943 2.48 in — Mar 22, 2001
April 95.0°F — Apr 19, 1976 4.1°F — Apr 5, 2016 2.46 in — Apr 23, 2023
May 97.0°F — May 19, 1962 21.0°F — May 3, 1966 5.12 in — May 13, 2006
June 100.0°F — Jun 24, 2025 26.1°F — Jun 24, 1939 3.92 in — Jun 21, 1944
July 102.0°F — Jul 3, 1966 33.1°F — Jul 23, 1939 2.57 in — Jul 24, 2008
August 100.9°F — Aug 2, 1975 28.9°F — Aug 31, 1965 3.84 in — Aug 19, 1991
September 98.1°F — Sep 2, 1953 19.9°F — Sep 30, 1941 4.12 in — Sep 12, 1960
October 90.0°F — Oct 7, 1963 10.0°F — Oct 21, 1972 4.37 in — Oct 8, 2005
November 80.1°F — Nov 2, 1950 -5.1°F — Nov 24, 1989 2.89 in — Nov 8, 1947
December 73.0°F — Dec 7, 1998 -22.0°F — Dec 17, 1951 2.73 in — Dec 18, 2023

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