All-time weather records — Manchester, NH

Record high
105.1°F
August 3, 1988
Record low
-43.1°F
February 16, 1943
Wettest day
6.05 in
September 11, 1954

Climate change signal in Manchester

10.4%

of Manchester's all-time daily heat records were set in the last decade (38 of 366 records since 2015).

1.9%

of all-time daily cold records were set in the last decade (7 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 #
1940s
59
138
1950s
47
64
1960s
29
45
1970s
38
14
1980s
39
17
1990s
36
31
2000s
54
50
2010s
39
4
2020s
25
3

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 1942, the latest in 2026. Period of observation: 1942-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 4, 1950 -35.0°F — Jan 22, 1961 3.26 in — Jan 7, 1944
February 73.9°F — Feb 22, 2018 -43.1°F — Feb 16, 1943 2.46 in — Feb 26, 2010
March 86.0°F — Mar 29, 1998 -22.0°F — Mar 9, 1943 2.38 in — Mar 7, 2011
April 93.9°F — Apr 18, 2002 3.9°F — Apr 7, 1982 2.50 in — Apr 2, 2004
May 95.0°F — May 19, 1962 12.9°F — May 17, 2001 6.00 in — May 14, 2006
June 98.1°F — Jun 11, 2008 19.0°F — Jun 13, 1991 4.75 in — Jun 30, 1973
July 100.0°F — Jul 8, 1989 33.1°F — Jul 2, 1943 3.80 in — Jul 17, 2023
August 105.1°F — Aug 3, 1988 32.0°F — Aug 25, 1942 4.19 in — Aug 25, 1990
September 96.1°F — Sep 2, 1953 12.0°F — Sep 29, 2000 6.05 in — Sep 11, 1954
October 88.0°F — Oct 7, 1963 12.0°F — Oct 31, 2001 5.70 in — Oct 21, 1996
November 91.0°F — Nov 27, 1954 -4.0°F — Nov 25, 1989 3.29 in — Nov 3, 1951
December 78.1°F — Dec 24, 1994 -25.1°F — Dec 28, 1951 2.87 in — Dec 12, 2008

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