Harrells, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.9 °F (low) to 73.5 °F (high). Annual precipitation averages 53.4 Inches. Harrells 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.0 °F | 54.9 °F | 3.7 in. |
| February | 34.2 °F | 58.2 °F | 3.27 in. |
| March | 40.3 °F | 65.4 °F | 3.91 in. |
| April | 49.3 °F | 74.2 °F | 3.53 in. |
| May | 58.2 °F | 80.8 °F | 4.03 in. |
| June | 66.6 °F | 87.1 °F | 5.36 in. |
| July | 70.4 °F | 90.3 °F | 6.1 in. |
| August | 68.8 °F | 88.5 °F | 6.35 in. |
| September | 63.6 °F | 83.8 °F | 6.62 in. |
| October | 51.7 °F | 75.0 °F | 3.66 in. |
| November | 40.9 °F | 65.4 °F | 3.4 in. |
| December | 35.3 °F | 57.8 °F | 3.46 in. |
| Annual | 50.9 °F | 73.5 °F | 53.39 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |