Sweet Grass County, Montana: hazard risk
FEMA rates Sweet Grass County's overall risk Very Low (score 8.1 of 100, higher than 8% of rated U.S. counties). Its storm record holds 1,045 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Wildfire | Relatively Low | 88.1 | $1.5M |
| Winter Weather | Relatively Low | 32.1 | $46K |
| Cold Wave | Relatively Low | 29.8 | $578K |
| Avalanche | Very Low | 60.7 | $2K |
| Landslide | Very Low | 56.3 | $3K |
| Earthquake | Very Low | 34.9 | $157K |
| Hail | Very Low | 21.4 | $109K |
| Riverine Flooding | Very Low | 19.7 | $3.4M |
| Lightning | Very Low | 18.3 | $88K |
| Drought | Very Low | 18.2 | $4K |
| Heat Wave | Very Low | 6.6 | $13K |
| Ice Storm | Very Low | 4.0 | $2K |
| Tornado | Very Low | 3.8 | $16K |
| Strong Wind | Very Low | 3.3 | $25K |
| Volcanic Activity | No Rating | 0.0 | $0 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Winter storms | 492 | 1 | – | 11th of 56 | 964th of 3,077 |
| High wind and dust storms | 332 | 0 | – | 7th of 56 | 224th of 3,080 |
| Hail | 130 | 0 | – | 26th of 56 | 2635th of 3,080 |
| Severe thunderstorm wind | 41 | 0 | $995K | 41st of 56 | 2775th of 3,080 |
| Wildfires | 13 | 0 | $1.6M | 7th of 56 | 443rd of 2,972 |
| Floods | 12 | 0 | $5.2M | 35th of 56 | 2881st of 3,080 |
| Landslides and avalanches | 11 | 10 | – | 2nd of 56 | 128th of 2,278 |
| Drought | 5 | 0 | – | 18th of 56 | 2466th of 3,063 |
| Heavy rain | 5 | 0 | – | 36th of 56 | 2048th of 3,080 |
| Tornadoes | 2 | 0 | $199 | 41st of 56 | 2903rd of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Sweet Grass County record: every hazard by year and month, the deadliest events and FEMA's declarations.