Blacksburg, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.1 °C (low) to 22 °C (high). Annual precipitation averages 1190.2 Millimeters. Blacksburg is located in USDA Plant Hardiness Zone 8a. 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 | -1.3 °C | 11 °C | 102.62 mm |
| February | 0.1 °C | 13.3 °C | 86.36 mm |
| March | 3.6 °C | 17.6 °C | 116.84 mm |
| April | 8.3 °C | 22.5 °C | 100.58 mm |
| May | 13.3 °C | 26.4 °C | 92.2 mm |
| June | 17.9 °C | 30.1 °C | 104.9 mm |
| July | 19.9 °C | 31.9 °C | 100.08 mm |
| August | 19.4 °C | 31 °C | 115.82 mm |
| September | 16 °C | 28.2 °C | 94.23 mm |
| October | 9.1 °C | 22.8 °C | 81.28 mm |
| November | 3.1 °C | 17 °C | 87.88 mm |
| December | 0.2 °C | 12.4 °C | 107.44 mm |
| Annual | 9.1 °C | 22 °C | 1190.23 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |