Lewisville, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52 °F (low) to 75 °F (high). Annual precipitation averages 53.9 Inches. Lewisville is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.0 °F | 55.0 °F | 4.24 in. |
| February | 36.1 °F | 59.0 °F | 4.82 in. |
| March | 43.0 °F | 67.2 °F | 5.07 in. |
| April | 50.6 °F | 75.1 °F | 5.08 in. |
| May | 60.2 °F | 81.9 °F | 5.27 in. |
| June | 67.9 °F | 89.1 °F | 4.43 in. |
| July | 71.2 °F | 93.1 °F | 3.79 in. |
| August | 70.0 °F | 93.2 °F | 3.05 in. |
| September | 63.5 °F | 87.5 °F | 3.86 in. |
| October | 51.5 °F | 76.9 °F | 4.8 in. |
| November | 41.6 °F | 65.2 °F | 4.21 in. |
| December | 35.1 °F | 56.9 °F | 5.23 in. |
| Annual | 52 °F | 75 °F | 53.85 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |