Brookneal, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.3 °F (low) to 68.7 °F (high). Annual precipitation averages 46.2 Inches. Brookneal is located in USDA Plant Hardiness Zone 7a. 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 | 25.8 °F | 47.6 °F | 3.78 in. |
| February | 27.6 °F | 51.2 °F | 2.75 in. |
| March | 33.8 °F | 59.1 °F | 3.97 in. |
| April | 43.6 °F | 69.8 °F | 3.48 in. |
| May | 53.2 °F | 77.0 °F | 4.78 in. |
| June | 62.0 °F | 84.5 °F | 4.11 in. |
| July | 66.2 °F | 88.2 °F | 4.12 in. |
| August | 64.7 °F | 86.5 °F | 3.76 in. |
| September | 58.0 °F | 80.3 °F | 4.33 in. |
| October | 45.1 °F | 70.1 °F | 3.85 in. |
| November | 34.3 °F | 59.7 °F | 3.62 in. |
| December | 29.1 °F | 50.7 °F | 3.63 in. |
| Annual | 45.3 °F | 68.7 °F | 46.18 in. |
| 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |