Bonneau, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.5 °F (low) to 76 °F (high). Annual precipitation averages 51.1 Inches. 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 | 35.6 °F | 58.6 °F | 2.91 in. |
| February | 37.9 °F | 62.0 °F | 3.61 in. |
| March | 43.7 °F | 68.9 °F | 3.45 in. |
| April | 51.5 °F | 76.8 °F | 3.29 in. |
| May | 60.5 °F | 83.4 °F | 3.55 in. |
| June | 68.3 °F | 89.0 °F | 6.07 in. |
| July | 71.7 °F | 91.9 °F | 5.97 in. |
| August | 70.8 °F | 90.2 °F | 6.31 in. |
| September | 65.7 °F | 85.4 °F | 5.23 in. |
| October | 54.4 °F | 77.1 °F | 4.1 in. |
| November | 43.7 °F | 68.1 °F | 2.66 in. |
| December | 38.4 °F | 61.1 °F | 3.92 in. |
| Annual | 53.5 °F | 76 °F | 51.07 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |