Old Fort, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 69.7 °F (high). Annual precipitation averages 56.5 Inches. Old Fort is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.5 °F | 50.0 °F | 4.78 in. |
| February | 29.6 °F | 54.0 °F | 3.66 in. |
| March | 35.9 °F | 61.6 °F | 4.83 in. |
| April | 43.8 °F | 70.8 °F | 5.06 in. |
| May | 53.0 °F | 77.6 °F | 4.62 in. |
| June | 60.9 °F | 83.9 °F | 4.8 in. |
| July | 64.8 °F | 86.9 °F | 4.86 in. |
| August | 63.8 °F | 85.4 °F | 5.01 in. |
| September | 57.8 °F | 80.1 °F | 5.06 in. |
| October | 45.9 °F | 71.3 °F | 4.82 in. |
| November | 35.0 °F | 61.4 °F | 3.88 in. |
| December | 29.7 °F | 52.8 °F | 5.07 in. |
| Annual | 45.6 °F | 69.7 °F | 56.45 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |