Gadsden, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.2 °C (low) to 24.3 °C (high). Annual precipitation averages 1206.8 Millimeters. Gadsden 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 | 1.2 °C | 14.2 °C | 97.54 mm |
| February | 2.3 °C | 16.2 °C | 90.42 mm |
| March | 5.8 °C | 20.3 °C | 99.57 mm |
| April | 10.3 °C | 24.7 °C | 79.25 mm |
| May | 15.3 °C | 28.4 °C | 89.15 mm |
| June | 19.8 °C | 31.8 °C | 126.49 mm |
| July | 21.8 °C | 33.4 °C | 124.21 mm |
| August | 21.3 °C | 32.6 °C | 127.76 mm |
| September | 18.1 °C | 29.8 °C | 112.27 mm |
| October | 11.3 °C | 24.9 °C | 90.42 mm |
| November | 5.1 °C | 19.6 °C | 74.68 mm |
| December | 2.3 °C | 15.5 °C | 95 mm |
| Annual | 11.2 °C | 24.3 °C | 1206.76 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |