Palmetto, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.2 °F (low) to 72.1 °F (high). Annual precipitation averages 53.7 Inches. Palmetto 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 | 32.6 °F | 53.3 °F | 4.93 in. |
| February | 35.6 °F | 57.5 °F | 5.0 in. |
| March | 42.0 °F | 65.2 °F | 5.12 in. |
| April | 49.4 °F | 73.1 °F | 4.31 in. |
| May | 58.6 °F | 79.7 °F | 3.78 in. |
| June | 66.2 °F | 85.5 °F | 4.37 in. |
| July | 69.5 °F | 88.5 °F | 5.14 in. |
| August | 68.8 °F | 87.5 °F | 4.52 in. |
| September | 63.0 °F | 82.6 °F | 3.94 in. |
| October | 51.7 °F | 73.3 °F | 3.39 in. |
| November | 41.1 °F | 63.7 °F | 4.18 in. |
| December | 35.5 °F | 55.6 °F | 4.98 in. |
| Annual | 51.2 °F | 72.1 °F | 53.66 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 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |