All-time weather records — Lebanon, NH

Record high
100.0°F
January 11, 2016
Record low
-57.8°F
June 8, 2010
Wettest day
4.70 in
September 16, 1999

Climate change signal in Lebanon

32.2%

of Lebanon's all-time daily heat records were set in the last decade (118 of 366 records since 2015).

9.8%

of all-time daily cold records were set in the last decade (36 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 #
1960s
36
127
1970s
53
89
1980s
44
30
1990s
11
4
2000s
60
57
2010s
88
47
2020s
74
12

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 1963, the latest in 2026. Period of observation: 1962-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 100.0°F — Jan 11, 2016 -29.9°F — Jan 11, 1968 1.53 in — Jan 22, 1987
February 82.0°F — Feb 8, 2001 -29.0°F — Feb 3, 1971 2.16 in — Feb 25, 1981
March 84.9°F — Mar 22, 2012 -23.8°F — Mar 7, 2007 2.02 in — Mar 23, 2024
April 91.0°F — Apr 19, 1976 2.1°F — Apr 5, 2016 1.88 in — Apr 3, 1975
May 96.1°F — May 26, 2010 19.9°F — May 3, 1966 2.47 in — May 29, 1984
June 100.0°F — Jun 24, 2025 -57.8°F — Jun 8, 2010 2.09 in — Jun 27, 1987
July 99.0°F — Jul 20, 1977 32.0°F — Jul 15, 2018 3.77 in — Jul 29, 1969
August 98.1°F — Aug 4, 2022 30.0°F — Aug 31, 1965 3.80 in — Aug 8, 1983
September 95.0°F — Sep 1, 2010 19.9°F — Sep 24, 1963 4.70 in — Sep 16, 1999
October 87.1°F — Oct 7, 1963 12.9°F — Oct 8, 1964 3.67 in — Oct 8, 2005
November 78.1°F — Nov 5, 2022 2.1°F — Nov 29, 2014 1.68 in — Nov 5, 1969
December 69.1°F — Dec 7, 1998 -25.8°F — Dec 30, 2017 2.25 in — Dec 21, 1973

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