Coosawhatchie, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.8 °F (low) to 77.2 °F (high). Annual precipitation averages 52.4 Inches. Coosawhatchie 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 | 37.4 °F | 60.6 °F | 3.86 in. |
| February | 40.0 °F | 63.9 °F | 3.67 in. |
| March | 45.9 °F | 70.4 °F | 3.49 in. |
| April | 53.0 °F | 78.0 °F | 3.53 in. |
| May | 61.6 °F | 84.7 °F | 3.31 in. |
| June | 68.4 °F | 89.5 °F | 5.73 in. |
| July | 71.6 °F | 92.0 °F | 6.17 in. |
| August | 71.1 °F | 90.4 °F | 6.71 in. |
| September | 66.6 °F | 86.0 °F | 5.41 in. |
| October | 56.0 °F | 78.5 °F | 3.74 in. |
| November | 45.7 °F | 69.3 °F | 2.95 in. |
| December | 40.1 °F | 63.0 °F | 3.87 in. |
| Annual | 54.8 °F | 77.2 °F | 52.44 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |