Nellie, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 16.4 °C (high). Annual precipitation averages 1098.8 Millimeters. 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 | -7.1 °C | 2.1 °C | 84.58 mm |
| February | -6.2 °C | 3.9 °C | 63.5 mm |
| March | -1.9 °C | 9.4 °C | 90.42 mm |
| April | 3.7 °C | 16.9 °C | 101.6 mm |
| May | 9.6 °C | 22.3 °C | 107.95 mm |
| June | 14.6 °C | 26.9 °C | 123.44 mm |
| July | 16.6 °C | 28.7 °C | 106.43 mm |
| August | 15.6 °C | 28.1 °C | 101.85 mm |
| September | 11.3 °C | 24.7 °C | 83.82 mm |
| October | 4.9 °C | 18 °C | 76.96 mm |
| November | -0.2 °C | 10.9 °C | 77.22 mm |
| December | -4.1 °C | 4.7 °C | 81.03 mm |
| Annual | 4.7 °C | 16.4 °C | 1098.8 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |