Clinton, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.7 °F (low) to 72.7 °F (high). Annual precipitation averages 46.5 Inches. Clinton is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.3 °F | 53.5 °F | 4.18 in. |
| February | 33.7 °F | 57.2 °F | 3.81 in. |
| March | 39.8 °F | 64.8 °F | 4.45 in. |
| April | 47.9 °F | 73.7 °F | 3.37 in. |
| May | 57.3 °F | 80.6 °F | 3.37 in. |
| June | 65.5 °F | 87.3 °F | 4.25 in. |
| July | 69.0 °F | 90.6 °F | 4.02 in. |
| August | 68.0 °F | 88.6 °F | 3.88 in. |
| September | 61.9 °F | 83.2 °F | 3.73 in. |
| October | 49.4 °F | 73.6 °F | 3.43 in. |
| November | 38.7 °F | 63.7 °F | 3.65 in. |
| December | 33.7 °F | 55.7 °F | 4.4 in. |
| Annual | 49.7 °F | 72.7 °F | 46.54 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |