Bonneau, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12 °C (low) to 24.5 °C (high). Annual precipitation averages 1297.2 Millimeters. Bonneau 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 | 2 °C | 14.8 °C | 73.91 mm |
| February | 3.3 °C | 16.7 °C | 91.69 mm |
| March | 6.5 °C | 20.5 °C | 87.63 mm |
| April | 10.8 °C | 24.9 °C | 83.57 mm |
| May | 15.8 °C | 28.6 °C | 90.17 mm |
| June | 20.2 °C | 31.7 °C | 154.18 mm |
| July | 22.1 °C | 33.3 °C | 151.64 mm |
| August | 21.6 °C | 32.3 °C | 160.27 mm |
| September | 18.7 °C | 29.7 °C | 132.84 mm |
| October | 12.4 °C | 25.1 °C | 104.14 mm |
| November | 6.5 °C | 20.1 °C | 67.56 mm |
| December | 3.6 °C | 16.2 °C | 99.57 mm |
| Annual | 12 °C | 24.5 °C | 1297.17 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 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |