Mableton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.9 °F (low) to 71.5 °F (high). Annual precipitation averages 54.3 Inches. Mableton is located in USDA Plant Hardiness Zone 8a. 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 | 32.0 °F | 52.4 °F | 4.82 in. |
| February | 34.8 °F | 56.4 °F | 4.91 in. |
| March | 41.3 °F | 64.3 °F | 5.07 in. |
| April | 49.4 °F | 72.4 °F | 4.16 in. |
| May | 58.5 °F | 79.0 °F | 4.16 in. |
| June | 66.3 °F | 85.0 °F | 4.32 in. |
| July | 69.7 °F | 87.8 °F | 5.49 in. |
| August | 68.9 °F | 87.1 °F | 4.3 in. |
| September | 62.9 °F | 82.3 °F | 4.13 in. |
| October | 51.3 °F | 72.9 °F | 3.72 in. |
| November | 40.4 °F | 63.1 °F | 4.31 in. |
| December | 35.0 °F | 54.9 °F | 4.9 in. |
| Annual | 50.9 °F | 71.5 °F | 54.29 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |