Lewisville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.8 °C (low) to 16.3 °C (high). Annual precipitation averages 1103.4 Millimeters. Lewisville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 2.6 °C | 83.82 mm |
| February | -4.6 °C | 4.4 °C | 68.58 mm |
| March | -0.8 °C | 9.6 °C | 87.63 mm |
| April | 4.9 °C | 16.8 °C | 99.31 mm |
| May | 9.8 °C | 21.6 °C | 107.95 mm |
| June | 14.7 °C | 26.2 °C | 120.14 mm |
| July | 17.6 °C | 28.3 °C | 108.46 mm |
| August | 15.7 °C | 27.7 °C | 94.23 mm |
| September | 12.4 °C | 24.6 °C | 90.42 mm |
| October | 6.3 °C | 17.8 °C | 78.49 mm |
| November | 1.7 °C | 11 °C | 80.01 mm |
| December | -2.7 °C | 5.1 °C | 84.33 mm |
| Annual | 5.8 °C | 16.3 °C | 1103.37 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |