Moorcroft, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.7 °F (low) to 58.7 °F (high). Annual precipitation averages 16.3 Inches. Moorcroft is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.0 °F | 34.6 °F | 0.54 in. |
| February | 13.1 °F | 36.7 °F | 0.65 in. |
| March | 22.0 °F | 47.2 °F | 1.02 in. |
| April | 29.6 °F | 55.8 °F | 1.94 in. |
| May | 39.3 °F | 65.1 °F | 3.04 in. |
| June | 48.8 °F | 76.8 °F | 2.5 in. |
| July | 55.3 °F | 86.4 °F | 1.68 in. |
| August | 53.4 °F | 85.9 °F | 1.22 in. |
| September | 43.6 °F | 75.3 °F | 1.01 in. |
| October | 31.5 °F | 59.5 °F | 1.47 in. |
| November | 20.7 °F | 45.6 °F | 0.65 in. |
| December | 12.0 °F | 35.3 °F | 0.61 in. |
| Annual | 31.7 °F | 58.7 °F | 16.33 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |