Utah winter weather risk
Salt Lake County has the highest winter weather risk in Utah, scoring 98.7 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Salt Lake County | 98.7 | Very High | 0 |
| 2 | Iron County | 95.2 | Relatively High | 0 |
| 3 | Tooele County | 95.1 | Relatively High | 0 |
| 4 | Utah County | 93.8 | Relatively High | 0 |
| 5 | Cache County | 93.3 | Relatively High | 0 |
| 6 | Millard County | 92.5 | Relatively High | 0 |
| 7 | Wasatch County | 92.3 | Relatively High | 0 |
| 8 | Weber County | 90.5 | Relatively High | 0 |
| 9 | Davis County | 87.9 | Relatively High | 0 |
| 10 | Summit County | 87 | Relatively High | 0 |
| 11 | Garfield County | 86.7 | Relatively High | 0 |
| 12 | Beaver County | 85.2 | Relatively High | 0 |
| 13 | San Juan County | 82.6 | Relatively Moderate | 0 |
| 14 | Juab County | 81.1 | Relatively Moderate | 0 |
| 15 | Sanpete County | 78.9 | Relatively Moderate | 0 |
| 16 | Morgan County | 74.9 | Relatively Moderate | 0 |
| 17 | Wayne County | 73.6 | Relatively Moderate | 0 |
| 18 | Box Elder County | 72.7 | Relatively Moderate | 0 |
| 19 | Sevier County | 69.9 | Relatively Moderate | 0 |
| 20 | Kane County | 65.7 | Relatively Moderate | 0 |
| 21 | Emery County | 63.5 | Relatively Moderate | 0 |
| 22 | Carbon County | 62.7 | Relatively Moderate | 0 |
| 23 | Piute County | 60.2 | Relatively Low | 0 |
| 24 | Rich County | 58.5 | Relatively Low | 0 |
| 25 | Duchesne County | 49.6 | Relatively Low | 0 |
| 26 | Washington County | 47.3 | Relatively Low | 0 |
| 27 | Daggett County | 28.4 | Relatively Low | 0 |
| 28 | Grand County | 25.8 | Relatively Low | 0 |
| 29 | Uintah County | 23.5 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Winter Weather risk nationally:
Other hazard risks in Utah:
Frequently asked questions
What is the highest winter weather risk county in Utah?
Salt Lake County, UT has the highest winter weather risk in Utah, with a FEMA National Risk Index score of 98.7 out of 100 (rated "Very High").
How many counties in Utah are rated Very High for winter weather risk?
1 of 29 scored Utah counties are rated "Very High" for winter weather risk by FEMA's National Risk Index.
What causes winter weather risk in Utah?
Winter weather risk captures expected losses from heavy snow, blizzards, and mixed precipitation. Highest scores appear in the Great Lakes snowbelt, northern Rockies, and interior Northeast, where lake-effect and orographic snowfall is frequent. Winter weather impacts transportation networks, utilities, agriculture, and population health.