Nashville, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.4 °C (low) to 15.4 °C (high). Annual precipitation averages 1053.1 Millimeters. Nashville 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 | -7.8 °C | 1 °C | 78.74 mm |
| February | -7.1 °C | 2.6 °C | 60.71 mm |
| March | -2.6 °C | 8.1 °C | 80.26 mm |
| April | 3.4 °C | 15.6 °C | 98.04 mm |
| May | 9.3 °C | 21.4 °C | 109.47 mm |
| June | 14.4 °C | 26.2 °C | 123.7 mm |
| July | 16.3 °C | 28 °C | 103.38 mm |
| August | 15.3 °C | 27.3 °C | 90.93 mm |
| September | 11.3 °C | 23.9 °C | 82.8 mm |
| October | 5.2 °C | 17.1 °C | 76.45 mm |
| November | -0.1 °C | 9.8 °C | 73.91 mm |
| December | -4.5 °C | 3.6 °C | 74.68 mm |
| Annual | 4.4 °C | 15.4 °C | 1053.07 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |