South Fulton, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 20.6 °C (high). Annual precipitation averages 1350.8 Millimeters. South Fulton is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.7 °C | 7.3 °C | 102.36 mm |
| February | -1.1 °C | 9.8 °C | 109.47 mm |
| March | 3.4 °C | 15.2 °C | 127 mm |
| April | 8.4 °C | 21 °C | 133.35 mm |
| May | 14.2 °C | 25.8 °C | 144.53 mm |
| June | 18.7 °C | 30.1 °C | 108.97 mm |
| July | 20.6 °C | 31.8 °C | 105.92 mm |
| August | 19.2 °C | 31.4 °C | 82.8 mm |
| September | 14.8 °C | 28.3 °C | 95.76 mm |
| October | 8.3 °C | 22.3 °C | 98.81 mm |
| November | 2.8 °C | 14.9 °C | 112.52 mm |
| December | -1.1 °C | 9.2 °C | 129.29 mm |
| Annual | 8.8 °C | 20.6 °C | 1350.78 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |