Hail Risk in Idaho
All Idaho counties ranked by FEMA National Risk Index hail score
Hail risk — ice stones from severe thunderstorms that damage property and crops — is rated for 44 of 44 Idaho counties in FEMA's National Risk Index. Bonneville County carries the state's highest hail score at 84.9, with $2M in expected annual hail losses.
No Idaho county reaches the High band for hail, and expected annual losses from hail total roughly $4M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Hail
| # | County | Hail Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Bonneville County | Medium | 0.43 / yr | $2M | |
| 2 | Ada County | Low | 0.24 / yr | $525K | |
| 3 | Canyon County | Low | 0.25 / yr | $273K | |
| 4 | Bingham County | Low | 0.43 / yr | $227K | |
| 5 | Madison County | Low | 0.33 / yr | $210K | |
| 6 | Bannock County | Low | 0.42 / yr | $217K | |
| 7 | Twin Falls County | Very Low | 0.21 / yr | $140K | |
| 8 | Payette County | Very Low | 0.25 / yr | $134K | |
| 9 | Gooding County | Very Low | 0.22 / yr | $97K | |
| 10 | Latah County | Very Low | 0.34 / yr | $116K | |
| 11 | Teton County | Very Low | 0.29 / yr | $98K | |
| 12 | Jefferson County | Very Low | 0.36 / yr | $100K | |
| 13 | Washington County | Very Low | 0.22 / yr | $50K | |
| 14 | Elmore County | Very Low | 0.21 / yr | $80K | |
| 15 | Kootenai County | Very Low | 0.26 / yr | $68K | |
| 16 | Owyhee County | Very Low | 0.14 / yr | $31K | |
| 17 | Fremont County | Very Low | 0.25 / yr | $67K | |
| 18 | Cassia County | Very Low | 0.30 / yr | $40K | |
| 19 | Power County | Very Low | 0.42 / yr | $35K | |
| 20 | Caribou County | Very Low | 0.41 / yr | $38K | |
| 21 | Minidoka County | Very Low | 0.32 / yr | $31K | |
| 22 | Idaho County | Very Low | 0.25 / yr | $23K | |
| 23 | Lewis County | Very Low | 0.32 / yr | $20K | |
| 24 | Nez Perce County | Very Low | 0.34 / yr | $35K | |
| 25 | Jerome County | Very Low | 0.26 / yr | $16K | |
| 26 | Clearwater County | Very Low | 0.30 / yr | $14K | |
| 27 | Franklin County | Very Low | 0.34 / yr | $23K | |
| 28 | Benewah County | Very Low | 0.29 / yr | $15K | |
| 29 | Blaine County | Very Low | 0.20 / yr | $18K | |
| 30 | Bonner County | Very Low | 0.22 / yr | $14K | |
| 31 | Valley County | Very Low | 0.12 / yr | $14K | |
| 32 | Gem County | Very Low | 0.23 / yr | $12K | |
| 33 | Lemhi County | Very Low | 0.14 / yr | $10K | |
| 34 | Boise County | Very Low | 0.20 / yr | $11K | |
| 35 | Lincoln County | Very Low | 0.25 / yr | $8K | |
| 36 | Adams County | Very Low | 0.16 / yr | $7K | |
| 37 | Boundary County | Very Low | 0.13 / yr | $6K | |
| 38 | Bear Lake County | Very Low | 0.28 / yr | $11K | |
| 39 | Oneida County | Very Low | 0.37 / yr | $7K | |
| 40 | Shoshone County | Very Low | 0.24 / yr | $4K | |
| 41 | Butte County | Very Low | 0.24 / yr | $4K | |
| 42 | Custer County | Very Low | 0.08 / yr | $2K | |
| 43 | Camas County | Very Low | 0.14 / yr | $3K | |
| 44 | Clark County | Very Low | 0.22 / yr | $3K |
44 Idaho counties with measurable hail risk. See the national hail ranking or all Idaho counties by overall risk.
Frequently Asked Questions
Which Idaho county has the highest hail risk?
Bonneville County has the highest FEMA hail risk score in Idaho at 84.9 (Medium), with $2M in expected annual losses and about 0.43 events per year.
How many Idaho counties face significant hail risk?
44 Idaho counties record measurable hail risk in FEMA's National Risk Index; 0 of them are rated High or Very High.