Lewisville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 61.3 °F (high). Annual precipitation averages 43.4 Inches. 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 | 21.9 °F | 36.6 °F | 3.3 in. |
| February | 23.8 °F | 39.9 °F | 2.7 in. |
| March | 30.6 °F | 49.2 °F | 3.45 in. |
| April | 40.8 °F | 62.2 °F | 3.91 in. |
| May | 49.7 °F | 70.9 °F | 4.25 in. |
| June | 58.4 °F | 79.2 °F | 4.73 in. |
| July | 63.7 °F | 82.9 °F | 4.27 in. |
| August | 60.3 °F | 81.8 °F | 3.71 in. |
| September | 54.3 °F | 76.2 °F | 3.56 in. |
| October | 43.3 °F | 64.0 °F | 3.09 in. |
| November | 35.0 °F | 51.8 °F | 3.15 in. |
| December | 27.2 °F | 41.1 °F | 3.32 in. |
| Annual | 42.4 °F | 61.3 °F | 43.44 in. |
| 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 : -5°F to 0°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 |