Riegelwood, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 74.1 °F (high). Annual precipitation averages 56.1 Inches. Riegelwood 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 | 33.4 °F | 56.7 °F | 3.85 in. |
| February | 35.0 °F | 59.5 °F | 3.46 in. |
| March | 41.1 °F | 66.6 °F | 4.01 in. |
| April | 49.9 °F | 74.4 °F | 3.52 in. |
| May | 58.7 °F | 81.0 °F | 4.08 in. |
| June | 67.3 °F | 87.0 °F | 5.44 in. |
| July | 71.0 °F | 90.1 °F | 5.89 in. |
| August | 69.6 °F | 88.5 °F | 6.64 in. |
| September | 64.4 °F | 83.8 °F | 7.74 in. |
| October | 52.5 °F | 75.5 °F | 4.25 in. |
| November | 42.0 °F | 66.7 °F | 3.51 in. |
| December | 36.6 °F | 59.6 °F | 3.69 in. |
| Annual | 51.8 °F | 74.1 °F | 56.08 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |