Brodnax, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 21 °C (high). Annual precipitation averages 1181.1 Millimeters. Brodnax is located in USDA Plant Hardiness Zone 7b. 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 | -1.9 °C | 9.4 °C | 88.14 mm |
| February | -1.1 °C | 11.6 °C | 70.1 mm |
| March | 2.4 °C | 15.5 °C | 103.89 mm |
| April | 7.8 °C | 21.3 °C | 87.88 mm |
| May | 13.1 °C | 25.3 °C | 95.5 mm |
| June | 17.8 °C | 29.8 °C | 114.81 mm |
| July | 20.1 °C | 31.8 °C | 121.67 mm |
| August | 19.4 °C | 30.7 °C | 112.27 mm |
| September | 15.9 °C | 27.5 °C | 123.7 mm |
| October | 8.9 °C | 21.8 °C | 89.92 mm |
| November | 3.2 °C | 16.1 °C | 83.82 mm |
| December | -0.1 °C | 11.4 °C | 89.41 mm |
| Annual | 8.8 °C | 21 °C | 1181.11 mm |
| 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |