South Hill, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.6 °C (low) to 20.9 °C (high). Annual precipitation averages 1169.4 Millimeters. South Hill is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.2 °C | 9.2 °C | 87.88 mm |
| February | -1.3 °C | 11.3 °C | 69.34 mm |
| March | 2.2 °C | 15.4 °C | 103.38 mm |
| April | 7.7 °C | 21.2 °C | 87.88 mm |
| May | 12.9 °C | 25.3 °C | 97.54 mm |
| June | 17.7 °C | 29.7 °C | 113.03 mm |
| July | 19.9 °C | 31.7 °C | 120.14 mm |
| August | 19.2 °C | 30.6 °C | 107.19 mm |
| September | 15.7 °C | 27.4 °C | 120.65 mm |
| October | 8.7 °C | 21.7 °C | 90.17 mm |
| November | 2.8 °C | 15.9 °C | 82.8 mm |
| December | -0.3 °C | 11.2 °C | 89.41 mm |
| Annual | 8.6 °C | 20.9 °C | 1169.41 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |