| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | Sep.11 - Sep. 20 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 25h - Platte River Valley and Terraces | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 82240 - Torrington, WY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 15 | 23 | 31 | 41 | 50 | 56 | 53 | 42 | 30 | 19 | 11 | 32 |
| Avg Max Temp (°F) | 40 | 45 | 52 | 61 | 71 | 83 | 89 | 87 | 78 | 66 | 49 | 41 | 64 |
| Avg Precip (In.) | .34 | .4 | .75 | 1.71 | 2.61 | 2.13 | 1.81 | 1.19 | 1.3 | .97 | .59 | .37 | 14.18 |