Boykin, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 23.7 °C (high). Annual precipitation averages 1167.6 Millimeters. Boykin is located in USDA Plant Hardiness Zone 8a. 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 | 0.2 °C | 13.4 °C | 96.27 mm |
| February | 1.4 °C | 15.4 °C | 86.36 mm |
| March | 4.7 °C | 19.5 °C | 95 mm |
| April | 9.5 °C | 24.3 °C | 77.72 mm |
| May | 14.7 °C | 28 °C | 84.58 mm |
| June | 19.3 °C | 31.4 °C | 119.63 mm |
| July | 21.3 °C | 33.1 °C | 117.35 mm |
| August | 20.7 °C | 32.2 °C | 123.95 mm |
| September | 17.4 °C | 29.5 °C | 107.44 mm |
| October | 10.8 °C | 24.2 °C | 87.12 mm |
| November | 4.4 °C | 18.6 °C | 75.18 mm |
| December | 1.4 °C | 14.7 °C | 97.03 mm |
| Annual | 10.5 °C | 23.7 °C | 1167.63 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 8a : -12.2°C to -9.4°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 |