Heat Wave Risk in Wyoming
All Wyoming counties ranked by FEMA National Risk Index heat wave score
Heat Wave risk — prolonged periods of extreme heat that threaten health and infrastructure — is rated for 18 of 23 Wyoming counties in FEMA's National Risk Index. Sheridan County carries the state's highest heat wave score at 33.5, with $172K in expected annual heat wave losses.
No Wyoming county reaches the High band for heat wave, and expected annual losses from heat wave total roughly $471K statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Heat Wave
| # | County | Heat Wave Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Sheridan County | Very Low | 1.26 / yr | $172K | |
| 2 | Laramie County | Very Low | 0.14 / yr | $66K | |
| 3 | Natrona County | Very Low | 0.13 / yr | $54K | |
| 4 | Fremont County | Very Low | 0.11 / yr | $32K | |
| 5 | Goshen County | Very Low | 0.63 / yr | $31K | |
| 6 | Campbell County | Very Low | 0.21 / yr | $34K | |
| 7 | Platte County | Very Low | 0.26 / yr | $11K | |
| 8 | Big Horn County | Very Low | 0.22 / yr | $12K | |
| 9 | Park County | Very Low | 0.03 / yr | $13K | |
| 10 | Washakie County | Very Low | 0.24 / yr | $8K | |
| 11 | Converse County | Very Low | 0.17 / yr | $10K | |
| 12 | Johnson County | Very Low | 0.23 / yr | $9K | |
| 13 | Niobrara County | Very Low | 0.47 / yr | $5K | |
| 14 | Hot Springs County | Very Low | 0.14 / yr | $5K | |
| 15 | Weston County | Very Low | 0.20 / yr | $6K | |
| 16 | Crook County | Very Low | 0.13 / yr | $4K | |
| 17 | Teton County | Very Low | 0.00 / yr | $1 | |
| 18 | Lincoln County | Very Low | 0.00 / yr | $0 |
18 Wyoming counties with measurable heat wave risk. See the national heat wave ranking or all Wyoming counties by overall risk.
Frequently Asked Questions
Which Wyoming county has the highest heat wave risk?
Sheridan County has the highest FEMA heat wave risk score in Wyoming at 33.5 (Very Low), with $172K in expected annual losses and about 1.26 events per year.
How many Wyoming counties face significant heat wave risk?
18 Wyoming counties record measurable heat wave risk in FEMA's National Risk Index; 0 of them are rated High or Very High.