Nashville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17.6 °C (high). Annual precipitation averages 1277.9 Millimeters. Nashville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.2 °C | 3.1 °C | 93.22 mm |
| February | -4.9 °C | 5.7 °C | 78.99 mm |
| March | -0.3 °C | 11.4 °C | 95.25 mm |
| April | 5.3 °C | 18.1 °C | 137.16 mm |
| May | 11.2 °C | 23.3 °C | 136.65 mm |
| June | 16.1 °C | 27.9 °C | 136.14 mm |
| July | 18.1 °C | 29.7 °C | 120.4 mm |
| August | 16.9 °C | 29.3 °C | 94.23 mm |
| September | 12.6 °C | 26.2 °C | 99.06 mm |
| October | 5.9 °C | 19.4 °C | 90.68 mm |
| November | 0.6 °C | 11.9 °C | 98.3 mm |
| December | -3.6 °C | 5.6 °C | 97.79 mm |
| Annual | 6 °C | 17.6 °C | 1277.87 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |