Georgetown, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.4 °F (low) to 74.9 °F (high). Annual precipitation averages 56.4 Inches. Georgetown is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.7 °F | 58.2 °F | 3.87 in. |
| February | 38.8 °F | 60.9 °F | 3.42 in. |
| March | 44.5 °F | 67.2 °F | 3.78 in. |
| April | 52.8 °F | 75.1 °F | 3.23 in. |
| May | 61.0 °F | 82.1 °F | 3.79 in. |
| June | 68.8 °F | 86.9 °F | 5.6 in. |
| July | 72.4 °F | 90.1 °F | 6.08 in. |
| August | 71.6 °F | 88.4 °F | 7.32 in. |
| September | 66.8 °F | 84.1 °F | 7.27 in. |
| October | 55.5 °F | 76.7 °F | 5.25 in. |
| November | 44.8 °F | 67.9 °F | 2.95 in. |
| December | 39.6 °F | 60.9 °F | 3.81 in. |
| Annual | 54.4 °F | 74.9 °F | 56.37 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |