Jacksonville, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 73.8 °F (high). Annual precipitation averages 58.5 Inches. Jacksonville is located in USDA Plant Hardiness Zone 8b. 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 | 33.2 °F | 56.1 °F | 3.87 in. |
| February | 35.1 °F | 59.1 °F | 3.61 in. |
| March | 40.9 °F | 65.8 °F | 4.09 in. |
| April | 49.8 °F | 74.2 °F | 3.42 in. |
| May | 58.8 °F | 80.5 °F | 4.5 in. |
| June | 67.0 °F | 86.8 °F | 5.57 in. |
| July | 71.1 °F | 90.0 °F | 6.38 in. |
| August | 69.5 °F | 88.0 °F | 7.7 in. |
| September | 64.6 °F | 83.8 °F | 7.7 in. |
| October | 52.8 °F | 75.6 °F | 4.34 in. |
| November | 41.8 °F | 66.4 °F | 3.31 in. |
| December | 36.4 °F | 59.3 °F | 3.97 in. |
| Annual | 51.8 °F | 73.8 °F | 58.46 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 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |