Hassell, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 21.8 °C (high). Annual precipitation averages 1275.9 Millimeters. Hassell 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 | -0.3 °C | 11.1 °C | 93.73 mm |
| February | 0.7 °C | 12.8 °C | 77.98 mm |
| March | 4.3 °C | 16.7 °C | 101.85 mm |
| April | 9.6 °C | 22.1 °C | 91.19 mm |
| May | 14.7 °C | 25.9 °C | 93.22 mm |
| June | 19.2 °C | 29.9 °C | 122.68 mm |
| July | 21.3 °C | 31.7 °C | 137.67 mm |
| August | 20.3 °C | 30.7 °C | 138.18 mm |
| September | 17.1 °C | 27.8 °C | 156.72 mm |
| October | 10.4 °C | 22.8 °C | 92.46 mm |
| November | 4.6 °C | 17.3 °C | 83.57 mm |
| December | 1.4 °C | 12.8 °C | 86.61 mm |
| Annual | 10.3 °C | 21.8 °C | 1275.86 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |