Mount Charleston, Nevada has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 36.6 °F (low) to 60.2 °F (high). Annual precipitation averages 23.4 Inches. Mount Charleston is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Jul. 1 - Jul. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.3 °F | 44.8 °F | 3.47 in. |
| February | 23.1 °F | 45.2 °F | 3.54 in. |
| March | 27.0 °F | 49.6 °F | 2.63 in. |
| April | 31.6 °F | 55.2 °F | 1.19 in. |
| May | 39.6 °F | 63.8 °F | 0.87 in. |
| June | 48.9 °F | 75.1 °F | 0.27 in. |
| July | 55.2 °F | 80.2 °F | 2.12 in. |
| August | 54.6 °F | 78.7 °F | 2.01 in. |
| September | 47.5 °F | 72.2 °F | 1.38 in. |
| October | 37.3 °F | 61.6 °F | 1.62 in. |
| November | 28.7 °F | 51.5 °F | 1.48 in. |
| December | 22.8 °F | 44.1 °F | 2.85 in. |
| Annual | 36.6 °F | 60.2 °F | 23.43 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jul. 1 - Jul. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |