Wyoming winter weather risk
Laramie County has the highest winter weather risk in Wyoming, scoring 97.1 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Laramie County | 97.1 | Very High | 0 |
| 2 | Natrona County | 97.1 | Very High | 0 |
| 3 | Sheridan County | 93.9 | Relatively High | 0 |
| 4 | Albany County | 90.6 | Relatively High | 0 |
| 5 | Campbell County | 89.2 | Relatively High | 0 |
| 6 | Lincoln County | 87.6 | Relatively High | 0 |
| 7 | Uinta County | 86.2 | Relatively High | 0 |
| 8 | Sweetwater County | 85.6 | Relatively High | 0 |
| 9 | Fremont County | 84.4 | Relatively Moderate | 0 |
| 10 | Converse County | 84.2 | Relatively Moderate | 0 |
| 11 | Platte County | 80.9 | Relatively Moderate | 0 |
| 12 | Goshen County | 79.6 | Relatively Moderate | 0 |
| 13 | Carbon County | 71.9 | Relatively Moderate | 0 |
| 14 | Crook County | 67.9 | Relatively Moderate | 0 |
| 15 | Johnson County | 66.7 | Relatively Moderate | 0 |
| 16 | Park County | 64.5 | Relatively Moderate | 0 |
| 17 | Teton County | 64.2 | Relatively Moderate | 0 |
| 18 | Weston County | 56.3 | Relatively Low | 0 |
| 19 | Niobrara County | 46.1 | Relatively Low | 0 |
| 20 | Big Horn County | 45.9 | Relatively Low | 0 |
| 21 | Washakie County | 32.4 | Relatively Low | 0 |
| 22 | Sublette County | 3.2 | Very Low | 0 |
| 23 | Hot Springs County | 2.3 | 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 Wyoming:
Frequently asked questions
What is the highest winter weather risk county in Wyoming?
Laramie County, WY has the highest winter weather risk in Wyoming, with a FEMA National Risk Index score of 97.1 out of 100 (rated "Very High").
How many counties in Wyoming are rated Very High for winter weather risk?
2 of 23 scored Wyoming counties are rated "Very High" for winter weather risk by FEMA's National Risk Index.
What causes winter weather risk in Wyoming?
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.