Nelsonville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.9 °F (low) to 63.9 °F (high). Annual precipitation averages 41.5 Inches. Nelsonville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.1 °F | 38.8 °F | 3.17 in. |
| February | 20.7 °F | 42.2 °F | 2.68 in. |
| March | 27.8 °F | 52.2 °F | 3.61 in. |
| April | 37.7 °F | 65.7 °F | 3.76 in. |
| May | 48.3 °F | 74.2 °F | 4.12 in. |
| June | 57.5 °F | 81.9 °F | 4.3 in. |
| July | 61.6 °F | 85.1 °F | 4.38 in. |
| August | 59.8 °F | 84.3 °F | 3.4 in. |
| September | 51.8 °F | 77.9 °F | 3.15 in. |
| October | 39.4 °F | 66.5 °F | 2.92 in. |
| November | 30.3 °F | 54.2 °F | 2.87 in. |
| December | 24.5 °F | 43.3 °F | 3.09 in. |
| Annual | 39.9 °F | 63.9 °F | 41.45 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |