Hillsville, Virginia has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 6.2 °C (low) to 17.4 °C (high). Annual precipitation averages 1194.5 Millimeters. Hillsville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.1 °C | 5.8 °C | 95 mm |
| February | -3.1 °C | 7.6 °C | 76.45 mm |
| March | 0.4 °C | 11.9 °C | 96.77 mm |
| April | 5.4 °C | 17.9 °C | 113.79 mm |
| May | 10.5 °C | 22.2 °C | 115.57 mm |
| June | 14.8 °C | 25.9 °C | 128.02 mm |
| July | 16.8 °C | 27.7 °C | 108.2 mm |
| August | 16.2 °C | 27.1 °C | 93.47 mm |
| September | 12.7 °C | 23.9 °C | 101.85 mm |
| October | 6.2 °C | 18.6 °C | 85.34 mm |
| November | 0.9 °C | 12.7 °C | 89.66 mm |
| December | -2.3 °C | 7.8 °C | 90.42 mm |
| Annual | 6.2 °C | 17.4 °C | 1194.54 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |