Nelson, Nevada has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 55.3 °F (low) to 77.4 °F (high). Annual precipitation averages 6 Inches. 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 | 38.4 °F | 56.1 °F | 0.82 in. |
| February | 40.4 °F | 59.5 °F | 1.13 in. |
| March | 46.0 °F | 67.1 °F | 0.69 in. |
| April | 51.4 °F | 75.2 °F | 0.28 in. |
| May | 60.1 °F | 84.8 °F | 0.19 in. |
| June | 69.6 °F | 95.7 °F | 0.06 in. |
| July | 76.2 °F | 100.5 °F | 0.48 in. |
| August | 75.0 °F | 98.9 °F | 0.47 in. |
| September | 67.7 °F | 92.1 °F | 0.45 in. |
| October | 56.5 °F | 78.9 °F | 0.45 in. |
| November | 45.0 °F | 64.9 °F | 0.35 in. |
| December | 37.6 °F | 54.8 °F | 0.67 in. |
| Annual | 55.3 °F | 77.4 °F | 6.04 in. |
| 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 : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |