Hallwood, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.7 °F (low) to 67.3 °F (high). Annual precipitation averages 46.2 Inches. Hallwood is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.1 °F | 47.3 °F | 3.36 in. |
| February | 31.2 °F | 49.2 °F | 3.03 in. |
| March | 37.6 °F | 55.5 °F | 4.13 in. |
| April | 46.8 °F | 65.6 °F | 3.36 in. |
| May | 56.2 °F | 74.4 °F | 3.65 in. |
| June | 65.3 °F | 82.8 °F | 3.86 in. |
| July | 70.5 °F | 87.0 °F | 4.31 in. |
| August | 68.3 °F | 85.1 °F | 4.66 in. |
| September | 62.9 °F | 80.1 °F | 4.79 in. |
| October | 51.5 °F | 69.7 °F | 4.22 in. |
| November | 41.2 °F | 59.6 °F | 2.96 in. |
| December | 34.6 °F | 51.4 °F | 3.87 in. |
| Annual | 49.7 °F | 67.3 °F | 46.2 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |