Wallace, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 23.1 °C (high). Annual precipitation averages 1218.7 Millimeters. Wallace is located in USDA Plant Hardiness Zone 8a. 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 | -0.2 °C | 12.4 °C | 91.19 mm |
| February | 0.9 °C | 14.5 °C | 79.5 mm |
| March | 4.5 °C | 18.7 °C | 95 mm |
| April | 9.4 °C | 23.7 °C | 82.3 mm |
| May | 14.6 °C | 27.6 °C | 90.93 mm |
| June | 19.4 °C | 31.1 °C | 119.38 mm |
| July | 21.4 °C | 32.7 °C | 131.57 mm |
| August | 20.6 °C | 31.7 °C | 126.24 mm |
| September | 17.2 °C | 28.7 °C | 132.08 mm |
| October | 10.3 °C | 23.7 °C | 92.71 mm |
| November | 4.2 °C | 18.3 °C | 82.8 mm |
| December | 1.4 °C | 13.9 °C | 95 mm |
| Annual | 10.3 °C | 23.1 °C | 1218.7 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |