Edgefield, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 23.8 °C (high). Annual precipitation averages 1175.3 Millimeters. Edgefield 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 | 0.8 °C | 13.2 °C | 106.43 mm |
| February | 1.8 °C | 15.2 °C | 93.47 mm |
| March | 5.2 °C | 19.5 °C | 110.74 mm |
| April | 9.7 °C | 24.2 °C | 79.76 mm |
| May | 14.6 °C | 28.3 °C | 80.52 mm |
| June | 18.9 °C | 31.9 °C | 116.33 mm |
| July | 20.7 °C | 33.6 °C | 107.19 mm |
| August | 20.2 °C | 32.7 °C | 118.87 mm |
| September | 17.1 °C | 29.7 °C | 95.5 mm |
| October | 10.7 °C | 24.6 °C | 75.95 mm |
| November | 4.7 °C | 18.8 °C | 84.58 mm |
| December | 1.9 °C | 14.3 °C | 105.92 mm |
| Annual | 10.5 °C | 23.8 °C | 1175.26 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |