Zion, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 73.7 °F (high). Annual precipitation averages 50.7 Inches. 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 | 33.6 °F | 55.5 °F | 3.35 in. |
| February | 35.8 °F | 58.9 °F | 3.44 in. |
| March | 41.6 °F | 66.1 °F | 3.6 in. |
| April | 50.1 °F | 74.8 °F | 3.36 in. |
| May | 59.1 °F | 81.5 °F | 3.98 in. |
| June | 67.4 °F | 87.2 °F | 5.05 in. |
| July | 70.9 °F | 90.1 °F | 5.19 in. |
| August | 69.6 °F | 88.5 °F | 6.02 in. |
| September | 64.0 °F | 83.4 °F | 5.99 in. |
| October | 52.0 °F | 75.0 °F | 3.62 in. |
| November | 41.6 °F | 65.6 °F | 3.34 in. |
| December | 36.3 °F | 58.2 °F | 3.76 in. |
| Annual | 51.8 °F | 73.7 °F | 50.7 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |