Green Sea, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52 °F (low) to 73.9 °F (high). Annual precipitation averages 53.3 Inches. Green Sea 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 | 34.0 °F | 56.0 °F | 3.76 in. |
| February | 36.0 °F | 59.1 °F | 3.41 in. |
| March | 41.7 °F | 66.3 °F | 3.75 in. |
| April | 50.2 °F | 74.7 °F | 3.4 in. |
| May | 59.0 °F | 81.4 °F | 3.98 in. |
| June | 67.4 °F | 87.2 °F | 5.57 in. |
| July | 71.1 °F | 89.8 °F | 5.77 in. |
| August | 69.7 °F | 88.6 °F | 6.37 in. |
| September | 64.0 °F | 83.1 °F | 6.7 in. |
| October | 52.5 °F | 75.6 °F | 3.72 in. |
| November | 42.0 °F | 66.0 °F | 3.33 in. |
| December | 36.7 °F | 58.6 °F | 3.57 in. |
| Annual | 52 °F | 73.9 °F | 53.33 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |