Lewisville, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.7 °C (low) to 20.8 °C (high). Annual precipitation averages 1174.5 Millimeters. Lewisville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.9 °C | 9.4 °C | 93.98 mm |
| February | -0.8 °C | 11.7 °C | 80.77 mm |
| March | 2.9 °C | 15.9 °C | 101.6 mm |
| April | 7.8 °C | 21.3 °C | 103.89 mm |
| May | 13.1 °C | 25.3 °C | 100.08 mm |
| June | 17.7 °C | 29.3 °C | 105.41 mm |
| July | 19.9 °C | 31.1 °C | 112.78 mm |
| August | 19.1 °C | 30.2 °C | 110.49 mm |
| September | 15.5 °C | 26.9 °C | 103.38 mm |
| October | 8.5 °C | 21.7 °C | 84.33 mm |
| November | 2.7 °C | 15.8 °C | 80.77 mm |
| December | -0.4 °C | 11.1 °C | 97.03 mm |
| Annual | 8.7 °C | 20.8 °C | 1174.51 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |