Milton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.8 °F (low) to 71.3 °F (high). Annual precipitation averages 53.8 Inches. Milton 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.8 °F | 51.2 °F | 4.93 in. |
| February | 33.9 °F | 55.5 °F | 4.83 in. |
| March | 40.0 °F | 63.6 °F | 5.11 in. |
| April | 48.1 °F | 72.1 °F | 4.34 in. |
| May | 57.5 °F | 79.5 °F | 4.0 in. |
| June | 65.5 °F | 85.8 °F | 4.24 in. |
| July | 69.0 °F | 88.5 °F | 4.98 in. |
| August | 68.2 °F | 88.1 °F | 4.28 in. |
| September | 61.9 °F | 82.7 °F | 4.43 in. |
| October | 50.1 °F | 73.0 °F | 3.71 in. |
| November | 38.9 °F | 62.1 °F | 4.26 in. |
| December | 33.9 °F | 53.8 °F | 4.73 in. |
| Annual | 49.8 °F | 71.3 °F | 53.84 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 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 |