McColl, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.6 °C (low) to 23.1 °C (high). Annual precipitation averages 1152.4 Millimeters. McColl 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 | 88.9 mm |
| February | 1.3 °C | 14.4 °C | 82.8 mm |
| March | 4.8 °C | 18.7 °C | 85.34 mm |
| April | 9.7 °C | 23.9 °C | 76.45 mm |
| May | 14.7 °C | 27.7 °C | 83.31 mm |
| June | 19.6 °C | 31.2 °C | 118.87 mm |
| July | 21.6 °C | 32.8 °C | 112.27 mm |
| August | 20.7 °C | 31.7 °C | 123.44 mm |
| September | 17.3 °C | 28.7 °C | 131.06 mm |
| October | 10.6 °C | 23.8 °C | 77.47 mm |
| November | 4.6 °C | 18.3 °C | 83.06 mm |
| December | 1.7 °C | 13.9 °C | 89.41 mm |
| Annual | 10.6 °C | 23.1 °C | 1152.38 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |