Heat in New Hampshire
Every heat event the National Weather Service has filed in New Hampshire, year by year, with the most significant episodes. Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
The most significant on the map
The most significant heat episodes in New Hampshire.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 26
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Heat in New Hampshire, December 7, 1998A southwesterly flow of very mild air ahead of an approaching cold front brought an unusually warm December day to the state. Maximum temperatures for the day ranged from the lower 70s in the southeastern part of the state to the 60s elsewhere.
- Heat in New Hampshire, March 27 to 31, 1998A west to southwesterly flow of unseasonably mild air brought record or near-record warmth to New Hampshire during the last five days of the month.
- Heat in New Hampshire, July 6 to 7, 2010A strong ridge built into Southern New England resulting in temperatures nearing 100 with high humidity. Heat index values ranged from 100 to 106 for most of Southern New England on the 6th and again on the 7th in a more limited area, generally the Connecticut River Valley.
More
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.