Torrington, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.5 °F (low) to 63.5 °F (high). Annual precipitation averages 15.1 Inches. Torrington is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.3 °F | 40.9 °F | 0.25 in. |
| February | 15.8 °F | 43.2 °F | 0.48 in. |
| March | 23.8 °F | 52.9 °F | 0.9 in. |
| April | 31.1 °F | 60.5 °F | 1.88 in. |
| May | 41.8 °F | 70.0 °F | 2.97 in. |
| June | 51.5 °F | 82.1 °F | 2.27 in. |
| July | 57.7 °F | 89.4 °F | 1.65 in. |
| August | 55.0 °F | 87.6 °F | 1.15 in. |
| September | 44.7 °F | 78.8 °F | 1.24 in. |
| October | 31.7 °F | 64.3 °F | 1.37 in. |
| November | 21.3 °F | 51.0 °F | 0.46 in. |
| December | 13.8 °F | 41.2 °F | 0.43 in. |
| Annual | 33.5 °F | 63.5 °F | 15.05 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |