Excessive Heat in New Hampshire
Every excessive heat event the National Weather Service has filed in New Hampshire, year by year, with the most significant episodes. Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
The most significant on the map
The most significant excessive 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
- 8
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Excessive Heat in New Hampshire, June 19 to 20, 2024A multi-day heatwave brought excessive heat to New Hampshire with temperatures and high humidity bringing heat index values above 95 degrees. The heat began on June 17th before peaking in intensity on June 19th and 20th with heat index values above 100F.
- Excessive Heat in New Hampshire, July 21, 2011A strong upper level ridge brought very hot temperatures to Southern New England. A moist southwest low level flow increased humidity levels such that heat index values rose above 105 degrees for a period of a few hours.
More
Excessive Heat everywhereEvery kind of event in New Hampshire
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.