Jonesville, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.5 °C (low) to 22.6 °C (high). Annual precipitation averages 1185.7 Millimeters. Jonesville is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.8 °C | 11.7 °C | 104.14 mm |
| February | 0.6 °C | 13.9 °C | 91.95 mm |
| March | 4 °C | 18.2 °C | 112.52 mm |
| April | 8.6 °C | 23.3 °C | 97.79 mm |
| May | 13.7 °C | 27.2 °C | 88.9 mm |
| June | 18.3 °C | 30.7 °C | 107.95 mm |
| July | 20.3 °C | 32.7 °C | 95.5 mm |
| August | 19.7 °C | 31.6 °C | 107.44 mm |
| September | 16.3 °C | 28.6 °C | 96.01 mm |
| October | 9.4 °C | 23.2 °C | 85.09 mm |
| November | 3.4 °C | 17.4 °C | 90.68 mm |
| December | 0.7 °C | 13 °C | 107.7 mm |
| Annual | 9.5 °C | 22.6 °C | 1185.67 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |