Nellie, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.5 °F (low) to 61.5 °F (high). Annual precipitation averages 43.3 Inches. Nellie is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.3 °F | 35.8 °F | 3.33 in. |
| February | 20.8 °F | 39.0 °F | 2.5 in. |
| March | 28.5 °F | 49.0 °F | 3.56 in. |
| April | 38.6 °F | 62.5 °F | 4.0 in. |
| May | 49.2 °F | 72.1 °F | 4.25 in. |
| June | 58.2 °F | 80.4 °F | 4.86 in. |
| July | 61.8 °F | 83.6 °F | 4.19 in. |
| August | 60.0 °F | 82.5 °F | 4.01 in. |
| September | 52.3 °F | 76.4 °F | 3.3 in. |
| October | 40.8 °F | 64.4 °F | 3.03 in. |
| November | 31.7 °F | 51.6 °F | 3.04 in. |
| December | 24.6 °F | 40.5 °F | 3.19 in. |
| Annual | 40.5 °F | 61.5 °F | 43.26 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |