Edison, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.5 °C (low) to 25.1 °C (high). Annual precipitation averages 1342.1 Millimeters. Edison is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.9 °C | 15.7 °C | 122.43 mm |
| February | 4.6 °C | 17.8 °C | 119.38 mm |
| March | 7.7 °C | 21.8 °C | 128.78 mm |
| April | 11.3 °C | 25.3 °C | 108.71 mm |
| May | 16.4 °C | 29.3 °C | 75.69 mm |
| June | 20.5 °C | 31.8 °C | 130.3 mm |
| July | 21.8 °C | 32.9 °C | 144.78 mm |
| August | 21.4 °C | 32.3 °C | 124.46 mm |
| September | 18.9 °C | 30.3 °C | 100.08 mm |
| October | 12.9 °C | 25.9 °C | 68.07 mm |
| November | 6.9 °C | 20.8 °C | 88.39 mm |
| December | 4.2 °C | 16.8 °C | 131.06 mm |
| Annual | 12.5 °C | 25.1 °C | 1342.13 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |