Mableton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 21.9 °C (high). Annual precipitation averages 1379 Millimeters. 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 | 0 °C | 11.3 °C | 122.43 mm |
| February | 1.6 °C | 13.6 °C | 124.71 mm |
| March | 5.2 °C | 17.9 °C | 128.78 mm |
| April | 9.7 °C | 22.4 °C | 105.66 mm |
| May | 14.7 °C | 26.1 °C | 105.66 mm |
| June | 19.1 °C | 29.4 °C | 109.73 mm |
| July | 20.9 °C | 31 °C | 139.45 mm |
| August | 20.5 °C | 30.6 °C | 109.22 mm |
| September | 17.2 °C | 27.9 °C | 104.9 mm |
| October | 10.7 °C | 22.7 °C | 94.49 mm |
| November | 4.7 °C | 17.3 °C | 109.47 mm |
| December | 1.7 °C | 12.7 °C | 124.46 mm |
| Annual | 10.5 °C | 21.9 °C | 1378.96 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |