Teton County, Montana severe weather history spans 216 recorded events between 1956 and 2025. The dominant hazard is hail, accounting for 47.2% of all recorded events. It ranks #2,343 nationally and #32 in Montana.
216
Recorded events
0
Direct deaths
0
Direct injuries
$5.4M
Property damage
The record
What the Teton County, Montana severe weather history record shows
Across the archive, Teton County, Montana severe weather history averages 3.1 recorded events a year. The busiest stretch on record is the 2020s, with 56 events logged in that decade alone. Roughly 32 events fall before 1990 and 184 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is thunderstorm wind, with $5.1M in reported property damage. In total, 9 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Teton County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Hail | 102 | 0 | $10K | 3 | 1956–2024 |
| Thunderstorm Wind | 88 | 0 | $5.1M | 80 | 1982–2025 |
| Flood | 6 | 0 | $250K | 0 | 2008–2020 |
| Heavy Rain | 6 | 0 | $0 | 0 | 2014–2022 |
| Tornado | 4 | 0 | $0 | F2 | 1963–1986 |
| Wildfire | 4 | 0 | $0 | 0 | 2000–2000 |
| Flash Flood | 3 | 0 | $0 | 0 | 2002–2021 |
| Funnel Cloud | 2 | 0 | $0 | 0 | 2022–2023 |
| Debris Flow | 1 | 0 | $50K | 0 | 2023–2023 |
Decade by decade
Teton County, Montana severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
4 mapped tornado paths intersect this county: 4 touched down inside it and 0 crossed in from a neighbouring county. This comes from path geometry, not county-tagged reports.
| Date | Scale | Deaths | Injuries | Path length | Origin |
|---|---|---|---|---|---|
| 1964-07-02 | EF1 | 0 | 0 | 27.0 mi | Touched down here |
| 1986-06-29 | EF0 | 0 | 0 | 0.2 mi | Touched down here |
| 1963-07-03 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
| 1963-06-05 | EF0 | 0 | 0 | 1.5 mi | Touched down here |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
An ice jam along the Spring Creek on the northeastern side of Choteau sent flood waters up to a couple feet in depth into a small section of the city with minor impacts. The flooding may have also played a partial role in the basement flooding reported by up to 80 houses in the city. Information was provided by the city of Choteau Facebook and by NWS field inspection.
Flooding with debris on roadways near 4th Avenue SW and 1st St, with additional flooding at 7th Avenue NW and Division St. Both areas had impassable roads. Up to 1.82 inches of rain were reported with the thunderstorms. Pictures provided by Choteau Acantha Newspaper.
Flooding occurred over North Central Montana on June 10th. Between 2 and 5 inches of rain fell over the plains during the morning and early afternoon hours resulting in many rivers rising to bank full along with urban street flooding. The water began to recede below bank full early on the 11th.
Context
Risk, population and federal disasters
Very Low
FEMA NRI risk rating
6,353
Population (ACS)
$264K
Median home value
12
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Apr 7, 2026 | Straight-Line Winds | SEVERE WINTER STORM AND STRAIGHT-LINE WINDS | DR |
| Jul 18, 2024 | Severe Storm | SEVERE WINTER STORM AND FLOODING | DR |
| Mar 31, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Sep 12, 2017 | Fire | STRAWBERRY FIRE | FM |
| May 24, 2016 | Severe Storm | SEVERE WINTER STORM AND STRAIGHT-LINE WINDS | DR |
Quick answers
Frequently asked
How many severe weather events have been recorded in Teton County, Montana?
216 events are on record between 1956 and 2025, causing 0 direct deaths and $5.4M in property damage.
What is the most common severe weather hazard in Teton County?
Hail, with 102 recorded events — 47.2% of everything in the archive for this county.
How many tornadoes have crossed Teton County?
4 mapped tornado paths intersect the county boundary; 4 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Teton County?
12 federal disaster declarations from FEMA include Teton County, each tied to a specific incident period.
How risky is Teton County compared with the rest of the country?
FEMA's National Risk Index rates Teton County as very low risk, placing it in the 19 percentile of its state for expected annual loss.
Where does the Teton County, Montana severe weather history data come from?
Every figure is drawn from United States federal public-domain records: NOAA/NCEI Storm Events for the event archive, NOAA SPC SVRGIS for mapped tornado paths, FEMA for disaster declarations and risk ratings, and the U.S. Census for population context. Dates are shown in UTC and recent entries may still be revised by NOAA.
Nearby
Neighbouring counties
- Sweet Grass County 188
- Toole County 143
- Stillwater County 287
- Treasure County 159
- Silver Bow County 81
- Valley County 1,247
Cite this page
“Teton County, Montana.” Severe Weather History. severeweatherhistory.com/county/montana/teton-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.