Wilton, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.3 °F (low) to 75.2 °F (high). Annual precipitation averages 57.7 Inches. Wilton 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.1 °F | 55.7 °F | 5.4 in. |
| February | 36.0 °F | 60.3 °F | 5.84 in. |
| March | 42.5 °F | 68.3 °F | 5.55 in. |
| April | 49.4 °F | 76.0 °F | 5.22 in. |
| May | 58.7 °F | 83.1 °F | 4.26 in. |
| June | 66.3 °F | 88.9 °F | 4.88 in. |
| July | 69.8 °F | 91.8 °F | 5.07 in. |
| August | 69.2 °F | 91.2 °F | 4.19 in. |
| September | 63.4 °F | 86.8 °F | 3.85 in. |
| October | 51.4 °F | 77.0 °F | 3.2 in. |
| November | 40.7 °F | 66.0 °F | 4.61 in. |
| December | 35.5 °F | 57.8 °F | 5.59 in. |
| Annual | 51.3 °F | 75.2 °F | 57.66 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |