Valley Hill, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.6 °C (low) to 19.3 °C (high). Annual precipitation averages 1545.8 Millimeters. Valley Hill is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.4 °C | 8.6 °C | 138.68 mm |
| February | -2.1 °C | 10.7 °C | 112.52 mm |
| March | 1.2 °C | 14.6 °C | 127.76 mm |
| April | 5.6 °C | 19.7 °C | 132.84 mm |
| May | 10.4 °C | 23.6 °C | 118.62 mm |
| June | 14.9 °C | 26.9 °C | 131.83 mm |
| July | 17.1 °C | 28.7 °C | 147.57 mm |
| August | 16.4 °C | 27.9 °C | 153.16 mm |
| September | 13.1 °C | 25.2 °C | 119.38 mm |
| October | 6.6 °C | 20.2 °C | 110.49 mm |
| November | 0.8 °C | 14.7 °C | 121.92 mm |
| December | -1.8 °C | 10.3 °C | 131.06 mm |
| Annual | 6.6 °C | 19.3 °C | 1545.83 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |