Jamestown, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.3 °F (low) to 76.2 °F (high). Annual precipitation averages 52.2 Inches. Jamestown 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 | 35.3 °F | 58.7 °F | 3.61 in. |
| February | 37.5 °F | 61.9 °F | 3.52 in. |
| March | 43.4 °F | 68.9 °F | 3.62 in. |
| April | 51.1 °F | 77.2 °F | 3.39 in. |
| May | 60.2 °F | 83.7 °F | 3.62 in. |
| June | 68.0 °F | 88.7 °F | 5.43 in. |
| July | 71.6 °F | 91.8 °F | 6.02 in. |
| August | 70.6 °F | 90.2 °F | 6.24 in. |
| September | 65.5 °F | 85.7 °F | 5.81 in. |
| October | 54.2 °F | 77.5 °F | 4.23 in. |
| November | 43.4 °F | 68.3 °F | 2.91 in. |
| December | 38.2 °F | 61.3 °F | 3.79 in. |
| Annual | 53.3 °F | 76.2 °F | 52.19 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |