Wyoming hail risk
Campbell County has the highest hail risk in Wyoming, scoring 94.4 out of 100 — rated "Relatively High" by FEMA's National Risk Index. Recorded hail events across Wyoming have decreased 41% over the past five years compared to the prior five-year period.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Campbell County | 94.4 | Relatively High | 188 |
| 2 | Laramie County | 92.5 | Relatively Moderate | 387 |
| 3 | Goshen County | 86.7 | Relatively Moderate | 183 |
| 4 | Crook County | 82.2 | Relatively Moderate | 169 |
| 5 | Weston County | 75 | Relatively Moderate | 98 |
| 6 | Platte County | 65.4 | Relatively Low | 144 |
| 7 | Sheridan County | 60.8 | Relatively Low | 70 |
| 8 | Albany County | 48.3 | Relatively Low | 44 |
| 9 | Johnson County | 46.5 | Relatively Low | 44 |
| 10 | Natrona County | 41.1 | Relatively Low | 43 |
| 11 | Converse County | 39.7 | Relatively Low | 60 |
| 12 | Fremont County | 36.5 | Relatively Low | 25 |
| 13 | Park County | 36.4 | Relatively Low | 11 |
| 14 | Big Horn County | 26.6 | Very Low | 8 |
| 15 | Niobrara County | 25.7 | Very Low | 94 |
| 16 | Teton County | 22.4 | Very Low | 4 |
| 17 | Hot Springs County | 18.5 | Very Low | 10 |
| 18 | Sweetwater County | 14.4 | Very Low | 3 |
| 19 | Lincoln County | 12.1 | Very Low | 5 |
| 20 | Washakie County | 12 | Very Low | 5 |
| 21 | Uinta County | 7.3 | Very Low | 2 |
| 22 | Sublette County | 5.9 | Very Low | 4 |
| 23 | Carbon County | 5.1 | Very Low | 13 |
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.
Hail risk nationally:
Other hazard risks in Wyoming:
Frequently asked questions
What is the highest hail risk county in Wyoming?
Campbell County, WY has the highest hail risk in Wyoming, with a FEMA National Risk Index score of 94.4 out of 100 (rated "Relatively High").
What causes hail risk in Wyoming?
Hail risk reflects expected annual losses from damaging hailstones to structures, vehicles, and crops. High scores cluster in the central plains and Front Range — a corridor sometimes called "Hail Alley" — where large-diameter hail is most frequent. Hail causes over $10 billion in US property damage in active years, much of it to roofs, vehicles, and crops.