Vilonia, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.1 °F (low) to 72.2 °F (high). Annual precipitation averages 51.8 Inches. Vilonia is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.3 °F | 49.6 °F | 3.66 in. |
| February | 32.3 °F | 54.5 °F | 3.98 in. |
| March | 40.3 °F | 63.2 °F | 5.05 in. |
| April | 49.2 °F | 72.7 °F | 5.4 in. |
| May | 59.2 °F | 80.2 °F | 5.53 in. |
| June | 67.8 °F | 88.3 °F | 3.58 in. |
| July | 71.1 °F | 92.1 °F | 3.65 in. |
| August | 69.6 °F | 91.6 °F | 3.48 in. |
| September | 61.8 °F | 85.3 °F | 3.41 in. |
| October | 49.5 °F | 74.7 °F | 4.13 in. |
| November | 39.2 °F | 61.8 °F | 4.89 in. |
| December | 32.2 °F | 52.3 °F | 4.99 in. |
| Annual | 50.1 °F | 72.2 °F | 51.75 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |