Zion, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 23.2 °C (high). Annual precipitation averages 1287.8 Millimeters. Zion 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 | 0.9 °C | 13.1 °C | 85.09 mm |
| February | 2.1 °C | 14.9 °C | 87.38 mm |
| March | 5.3 °C | 18.9 °C | 91.44 mm |
| April | 10.1 °C | 23.8 °C | 85.34 mm |
| May | 15.1 °C | 27.5 °C | 101.09 mm |
| June | 19.7 °C | 30.7 °C | 128.27 mm |
| July | 21.6 °C | 32.3 °C | 131.83 mm |
| August | 20.9 °C | 31.4 °C | 152.91 mm |
| September | 17.8 °C | 28.6 °C | 152.15 mm |
| October | 11.1 °C | 23.9 °C | 91.95 mm |
| November | 5.3 °C | 18.7 °C | 84.84 mm |
| December | 2.4 °C | 14.6 °C | 95.5 mm |
| Annual | 11 °C | 23.2 °C | 1287.79 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |