Bald Head Island, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58 °F (low) to 71.2 °F (high). Annual precipitation averages 58.8 Inches. Bald Head Island is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.8 °F | 54.0 °F | 3.86 in. |
| February | 40.9 °F | 56.2 °F | 3.54 in. |
| March | 47.3 °F | 61.9 °F | 3.91 in. |
| April | 56.3 °F | 70.2 °F | 3.47 in. |
| May | 64.9 °F | 77.5 °F | 4.1 in. |
| June | 72.6 °F | 84.3 °F | 5.1 in. |
| July | 76.1 °F | 86.4 °F | 6.75 in. |
| August | 75.0 °F | 86.0 °F | 7.12 in. |
| September | 70.0 °F | 81.6 °F | 8.56 in. |
| October | 59.8 °F | 73.7 °F | 4.89 in. |
| November | 49.7 °F | 65.0 °F | 3.68 in. |
| December | 43.3 °F | 57.6 °F | 3.8 in. |
| Annual | 58 °F | 71.2 °F | 58.78 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |