Folkston, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.6 °C (low) to 26.5 °C (high). Annual precipitation averages 1286 Millimeters. Folkston is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.3 °C | 17.8 °C | 93.22 mm |
| February | 5.9 °C | 19.7 °C | 87.12 mm |
| March | 8.8 °C | 23.1 °C | 98.04 mm |
| April | 12.6 °C | 26.9 °C | 80.26 mm |
| May | 16.7 °C | 30.4 °C | 72.64 mm |
| June | 20.7 °C | 32.7 °C | 171.45 mm |
| July | 22.1 °C | 33.8 °C | 162.31 mm |
| August | 22.1 °C | 33.2 °C | 181.61 mm |
| September | 20.1 °C | 31.2 °C | 137.92 mm |
| October | 14.7 °C | 27.1 °C | 89.66 mm |
| November | 8.9 °C | 22.5 °C | 43.43 mm |
| December | 6 °C | 19 °C | 68.33 mm |
| Annual | 13.6 °C | 26.5 °C | 1285.99 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |