Edisto, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.7 °C (low) to 24.4 °C (high). Annual precipitation averages 1231.9 Millimeters. Edisto is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.8 °C | 14.4 °C | 104.39 mm |
| February | 3.1 °C | 16.4 °C | 94.49 mm |
| March | 6.6 °C | 20.4 °C | 96.01 mm |
| April | 10.8 °C | 24.7 °C | 85.34 mm |
| May | 15.6 °C | 28.6 °C | 91.19 mm |
| June | 19.9 °C | 31.8 °C | 127 mm |
| July | 21.8 °C | 33.2 °C | 135.38 mm |
| August | 21.3 °C | 32.4 °C | 124.71 mm |
| September | 18.3 °C | 29.8 °C | 112.78 mm |
| October | 11.9 °C | 25.1 °C | 87.38 mm |
| November | 5.9 °C | 19.7 °C | 74.42 mm |
| December | 2.9 °C | 15.8 °C | 98.81 mm |
| Annual | 11.7 °C | 24.4 °C | 1231.9 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |