Franklin, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 23.6 °C (high). Annual precipitation averages 1359.2 Millimeters. Franklin 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 | 0.3 °C | 13.1 °C | 131.83 mm |
| February | 1.8 °C | 15.3 °C | 128.27 mm |
| March | 5.2 °C | 19.7 °C | 131.57 mm |
| April | 8.9 °C | 23.9 °C | 113.03 mm |
| May | 14.1 °C | 27.8 °C | 91.69 mm |
| June | 18.5 °C | 31 °C | 108.71 mm |
| July | 20.4 °C | 33.2 °C | 121.16 mm |
| August | 20.1 °C | 32.1 °C | 109.47 mm |
| September | 16.9 °C | 29.4 °C | 95.5 mm |
| October | 10.3 °C | 24.3 °C | 86.36 mm |
| November | 4.4 °C | 18.8 °C | 109.73 mm |
| December | 1.7 °C | 14.3 °C | 131.83 mm |
| Annual | 10.2 °C | 23.6 °C | 1359.15 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |