Mountain City, Nevada has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from -1.8 °C (low) to 15.2 °C (high). Annual precipitation averages 337.1 Millimeters. Mountain City is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.9 °C | 3.4 °C | 30.99 mm |
| February | -8.5 °C | 4.9 °C | 25.15 mm |
| March | -5.4 °C | 8.8 °C | 28.45 mm |
| April | -2.7 °C | 12.4 °C | 39.62 mm |
| May | 1.2 °C | 17.8 °C | 51.82 mm |
| June | 4.6 °C | 23.6 °C | 23.11 mm |
| July | 7.9 °C | 29.7 °C | 12.95 mm |
| August | 6.7 °C | 29.4 °C | 14.48 mm |
| September | 3.2 °C | 24 °C | 18.8 mm |
| October | -2.7 °C | 16.7 °C | 24.89 mm |
| November | -6.4 °C | 8.6 °C | 30.99 mm |
| December | -9.9 °C | 3.6 °C | 35.81 mm |
| Annual | -1.8 °C | 15.2 °C | 337.06 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |