Half Moon, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.2 °F (low) to 73.7 °F (high). Annual precipitation averages 58.1 Inches. Half Moon 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.8 °F | 55.8 °F | 3.87 in. |
| February | 34.5 °F | 58.8 °F | 3.55 in. |
| March | 40.3 °F | 65.5 °F | 4.01 in. |
| April | 49.2 °F | 74.1 °F | 3.35 in. |
| May | 58.3 °F | 80.7 °F | 4.57 in. |
| June | 66.6 °F | 86.9 °F | 5.67 in. |
| July | 70.6 °F | 90.1 °F | 6.66 in. |
| August | 69.0 °F | 88.1 °F | 7.47 in. |
| September | 64.0 °F | 83.7 °F | 7.54 in. |
| October | 52.3 °F | 75.3 °F | 4.19 in. |
| November | 41.3 °F | 66.1 °F | 3.34 in. |
| December | 35.9 °F | 58.8 °F | 3.86 in. |
| Annual | 51.2 °F | 73.7 °F | 58.08 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |