Lusk, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.3 °C (low) to 15.2 °C (high). Annual precipitation averages 410 Millimeters. 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 | -10.6 °C | 2.9 °C | 10.92 mm |
| February | -9.8 °C | 3.6 °C | 18.54 mm |
| March | -5.4 °C | 9.4 °C | 24.13 mm |
| April | -1.7 °C | 13.2 °C | 54.1 mm |
| May | 3.7 °C | 18.4 °C | 70.87 mm |
| June | 8.8 °C | 24.9 °C | 58.93 mm |
| July | 12.4 °C | 29.8 °C | 47.5 mm |
| August | 11.4 °C | 29.3 °C | 26.42 mm |
| September | 6.1 °C | 24 °C | 30.73 mm |
| October | -0.8 °C | 15.4 °C | 36.83 mm |
| November | -6.7 °C | 8.3 °C | 17.02 mm |
| December | -10.4 °C | 2.9 °C | 13.97 mm |
| Annual | -0.3 °C | 15.2 °C | 409.96 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |