Ridgeland, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 25.1 °C (high). Annual precipitation averages 1322.8 Millimeters. Ridgeland is located in USDA Plant Hardiness Zone 9a. 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 | 3.1 °C | 15.9 °C | 96.52 mm |
| February | 4.7 °C | 17.8 °C | 89.41 mm |
| March | 8 °C | 21.6 °C | 88.14 mm |
| April | 11.9 °C | 25.4 °C | 90.42 mm |
| May | 16.6 °C | 29.1 °C | 83.57 mm |
| June | 20.5 °C | 31.9 °C | 146.05 mm |
| July | 22.3 °C | 33.3 °C | 153.92 mm |
| August | 22.1 °C | 32.4 °C | 175.51 mm |
| September | 19.5 °C | 29.9 °C | 135.13 mm |
| October | 13.7 °C | 25.7 °C | 92.96 mm |
| November | 7.8 °C | 20.7 °C | 73.91 mm |
| December | 4.7 °C | 17.1 °C | 97.28 mm |
| Annual | 12.9 °C | 25.1 °C | 1322.82 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |