Wilmington, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 23.5 °C (high). Annual precipitation averages 1557.3 Millimeters. Wilmington 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 | 1.4 °C | 13.9 °C | 100.33 mm |
| February | 2.2 °C | 15.4 °C | 90.68 mm |
| March | 5.6 °C | 19.1 °C | 102.11 mm |
| April | 10.8 °C | 23.4 °C | 88.39 mm |
| May | 15.6 °C | 27.2 °C | 109.47 mm |
| June | 20.2 °C | 30.4 °C | 140.72 mm |
| July | 22.1 °C | 32.3 °C | 179.07 mm |
| August | 21.3 °C | 31.4 °C | 198.37 mm |
| September | 18.5 °C | 28.9 °C | 232.16 mm |
| October | 12.2 °C | 24.6 °C | 124.46 mm |
| November | 6.3 °C | 19.7 °C | 92.71 mm |
| December | 2.8 °C | 15.7 °C | 98.81 mm |
| Annual | 11.6 °C | 23.5 °C | 1557.28 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 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |