Lanett, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.6 °F (low) to 74.7 °F (high). Annual precipitation averages 53.4 Inches. Lanett 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.2 °F | 56.4 °F | 5.09 in. |
| February | 36.3 °F | 60.4 °F | 4.89 in. |
| March | 42.5 °F | 68.1 °F | 5.23 in. |
| April | 49.3 °F | 75.0 °F | 4.75 in. |
| May | 58.6 °F | 82.2 °F | 3.75 in. |
| June | 66.3 °F | 88.0 °F | 4.03 in. |
| July | 69.9 °F | 90.7 °F | 5.35 in. |
| August | 69.3 °F | 89.8 °F | 3.96 in. |
| September | 63.8 °F | 85.2 °F | 3.58 in. |
| October | 52.1 °F | 76.1 °F | 3.31 in. |
| November | 41.6 °F | 66.3 °F | 3.91 in. |
| December | 36.1 °F | 58.7 °F | 5.51 in. |
| Annual | 51.6 °F | 74.7 °F | 53.36 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |