Blacksburg, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 42.8 °F (low) to 64.1 °F (high). Annual precipitation averages 42.9 Inches. Blacksburg is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.6 °F | 42.6 °F | 2.97 in. |
| February | 25.9 °F | 46.2 °F | 2.94 in. |
| March | 32.0 °F | 54.5 °F | 3.59 in. |
| April | 41.3 °F | 64.8 °F | 3.91 in. |
| May | 50.6 °F | 72.9 °F | 4.57 in. |
| June | 58.6 °F | 79.7 °F | 4.46 in. |
| July | 62.4 °F | 82.9 °F | 4.13 in. |
| August | 61.3 °F | 81.9 °F | 3.47 in. |
| September | 54.6 °F | 76.3 °F | 3.52 in. |
| October | 43.2 °F | 66.3 °F | 3.09 in. |
| November | 32.7 °F | 55.6 °F | 2.88 in. |
| December | 27.1 °F | 46.0 °F | 3.37 in. |
| Annual | 42.8 °F | 64.1 °F | 42.9 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |