Jackson, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.4 °C (low) to 24.7 °C (high). Annual precipitation averages 1193.3 Millimeters. Jackson is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 14.6 °C | 104.39 mm |
| February | 3.1 °C | 16.7 °C | 97.03 mm |
| March | 6.4 °C | 20.9 °C | 108.71 mm |
| April | 10.7 °C | 25.1 °C | 79.5 mm |
| May | 15.4 °C | 29.1 °C | 83.06 mm |
| June | 19.7 °C | 32.2 °C | 125.73 mm |
| July | 21.4 °C | 33.8 °C | 118.87 mm |
| August | 21.2 °C | 32.8 °C | 123.19 mm |
| September | 18 °C | 30.4 °C | 97.54 mm |
| October | 11.7 °C | 25.4 °C | 73.91 mm |
| November | 5.4 °C | 20 °C | 78.99 mm |
| December | 2.6 °C | 15.7 °C | 102.36 mm |
| Annual | 11.4 °C | 24.7 °C | 1193.28 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |