Nelsonville, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.2 °F (low) to 61.6 °F (high). Annual precipitation averages 50.9 Inches. Nelsonville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.4 °F | 36.4 °F | 3.87 in. |
| February | 20.3 °F | 39.4 °F | 2.87 in. |
| March | 28.0 °F | 47.9 °F | 4.07 in. |
| April | 39.1 °F | 60.5 °F | 3.94 in. |
| May | 49.1 °F | 71.5 °F | 3.68 in. |
| June | 58.5 °F | 80.3 °F | 4.58 in. |
| July | 63.7 °F | 85.4 °F | 4.41 in. |
| August | 62.2 °F | 83.7 °F | 4.85 in. |
| September | 54.6 °F | 76.4 °F | 4.96 in. |
| October | 43.0 °F | 64.1 °F | 5.13 in. |
| November | 33.0 °F | 52.2 °F | 4.2 in. |
| December | 24.6 °F | 41.2 °F | 4.35 in. |
| Annual | 41.2 °F | 61.6 °F | 50.91 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |