| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | BWk - Cold Desert Climate | |
| Ecoregion: | 18g - Bighorn Salt Desert Shrub Basin | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 82401 - Worland, WY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 3 | 11 | 23 | 32 | 42 | 51 | 56 | 53 | 42 | 31 | 18 | 6 | 31 |
| Avg Max Temp (°F) | 29 | 39 | 51 | 61 | 71 | 82 | 90 | 88 | 76 | 62 | 44 | 32 | 60 |
| Avg Precip (In.) | .26 | .2 | .42 | .84 | 1.61 | 1.14 | .71 | .56 | .86 | .74 | .37 | .26 | 7.96 |