Bell Arthur, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 22.4 °C (high). Annual precipitation averages 1312.9 Millimeters. Bell Arthur 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 | 0.2 °C | 11.7 °C | 93.98 mm |
| February | 1 °C | 13.6 °C | 81.28 mm |
| March | 4.4 °C | 17.4 °C | 99.06 mm |
| April | 9.7 °C | 22.8 °C | 91.69 mm |
| May | 14.8 °C | 26.7 °C | 107.44 mm |
| June | 19.4 °C | 30.7 °C | 122.94 mm |
| July | 21.6 °C | 32.3 °C | 141.22 mm |
| August | 20.6 °C | 31.1 °C | 144.27 mm |
| September | 17.3 °C | 28.3 °C | 169.93 mm |
| October | 10.6 °C | 23.4 °C | 91.69 mm |
| November | 4.8 °C | 17.9 °C | 83.31 mm |
| December | 1.7 °C | 13.4 °C | 86.11 mm |
| Annual | 10.5 °C | 22.4 °C | 1312.92 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |