Mount Charleston, Nevada has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 2.6 °C (low) to 15.6 °C (high). Annual precipitation averages 595.1 Millimeters. 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 | -4.8 °C | 7.1 °C | 88.14 mm |
| February | -4.9 °C | 7.3 °C | 89.92 mm |
| March | -2.8 °C | 9.8 °C | 66.8 mm |
| April | -0.2 °C | 12.9 °C | 30.23 mm |
| May | 4.2 °C | 17.7 °C | 22.1 mm |
| June | 9.4 °C | 23.9 °C | 6.86 mm |
| July | 12.9 °C | 26.8 °C | 53.85 mm |
| August | 12.6 °C | 25.9 °C | 51.05 mm |
| September | 8.6 °C | 22.3 °C | 35.05 mm |
| October | 2.9 °C | 16.4 °C | 41.15 mm |
| November | -1.8 °C | 10.8 °C | 37.59 mm |
| December | -5.1 °C | 6.7 °C | 72.39 mm |
| Annual | 2.6 °C | 15.6 °C | 595.13 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |