Lusk, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.6 °F (low) to 59.3 °F (high). Annual precipitation averages 16.1 Inches. Lusk is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.9 °F | 37.3 °F | 0.43 in. |
| February | 14.4 °F | 38.4 °F | 0.73 in. |
| March | 22.3 °F | 49.0 °F | 0.95 in. |
| April | 28.9 °F | 55.7 °F | 2.13 in. |
| May | 38.7 °F | 65.1 °F | 2.79 in. |
| June | 47.9 °F | 76.9 °F | 2.32 in. |
| July | 54.3 °F | 85.7 °F | 1.87 in. |
| August | 52.5 °F | 84.7 °F | 1.04 in. |
| September | 42.9 °F | 75.2 °F | 1.21 in. |
| October | 30.6 °F | 59.8 °F | 1.45 in. |
| November | 20.0 °F | 47.0 °F | 0.67 in. |
| December | 13.2 °F | 37.3 °F | 0.55 in. |
| Annual | 31.6 °F | 59.3 °F | 16.14 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| 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 |