Nelson, Nevada has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 13 °C (low) to 25.2 °C (high). Annual precipitation averages 153.4 Millimeters. Nelson is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 13.4 °C | 20.83 mm |
| February | 4.7 °C | 15.3 °C | 28.7 mm |
| March | 7.8 °C | 19.5 °C | 17.53 mm |
| April | 10.8 °C | 24 °C | 7.11 mm |
| May | 15.6 °C | 29.3 °C | 4.83 mm |
| June | 20.9 °C | 35.4 °C | 1.52 mm |
| July | 24.6 °C | 38.1 °C | 12.19 mm |
| August | 23.9 °C | 37.2 °C | 11.94 mm |
| September | 19.8 °C | 33.4 °C | 11.43 mm |
| October | 13.6 °C | 26.1 °C | 11.43 mm |
| November | 7.2 °C | 18.3 °C | 8.89 mm |
| December | 3.1 °C | 12.7 °C | 17.02 mm |
| Annual | 13 °C | 25.2 °C | 153.42 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |