Mountville, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.7 °F (low) to 73 °F (high). Annual precipitation averages 46.5 Inches. Mountville 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 | 53.9 °F | 4.2 in. |
| February | 33.6 °F | 57.5 °F | 3.76 in. |
| March | 39.8 °F | 65.2 °F | 4.42 in. |
| April | 47.9 °F | 73.9 °F | 3.32 in. |
| May | 57.3 °F | 81.0 °F | 3.33 in. |
| June | 65.6 °F | 87.6 °F | 4.36 in. |
| July | 69.1 °F | 90.7 °F | 3.84 in. |
| August | 68.1 °F | 89.0 °F | 4.12 in. |
| September | 62.0 °F | 83.6 °F | 3.71 in. |
| October | 49.5 °F | 74.0 °F | 3.29 in. |
| November | 38.7 °F | 64.0 °F | 3.68 in. |
| December | 33.7 °F | 56.0 °F | 4.43 in. |
| Annual | 49.7 °F | 73 °F | 46.46 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 |