Excessive Heat in Montana
Every excessive heat event the National Weather Service has filed in Montana, 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 Montana.
- 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
- 16
- Deaths
- 1
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Excessive Heat in Montana, June 26 to 28, 2018Hot temperatures and sunny skies increased the temperature inside of vehicles and contributed to the heatstroke death of a child in Glendive.
- Excessive Heat in Montana, August 9 to 12, 2018A stalled ridge of strong high pressure over the region allowed high temperatures to climb well into the triple digits for many locations for multiple days. Relative humidity values increased enough to make conditions unusually humid.
- Excessive Heat in Montana, August 9 to 10, 2018A ridge of high pressure brought a record breaking heat wave across lower elevations in northwest Montana August 9th and 10th.
- Excessive Heat and Heat in Montana, July 17 to 24, 2024The second heatwave that occurred was the hottest of the two heatwaves that occurred in July of 2024.
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.