Rustburg, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.4 °C (low) to 19.6 °C (high). Annual precipitation averages 1149.9 Millimeters. Rustburg is located in USDA Plant Hardiness Zone 7b. 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 | -3.3 °C | 7.8 °C | 91.69 mm |
| February | -2.4 °C | 9.8 °C | 73.41 mm |
| March | 1.3 °C | 14.4 °C | 97.79 mm |
| April | 6.6 °C | 20.3 °C | 92.46 mm |
| May | 11.8 °C | 24.2 °C | 109.73 mm |
| June | 16.3 °C | 28.2 °C | 101.6 mm |
| July | 18.7 °C | 30.3 °C | 104.65 mm |
| August | 17.8 °C | 29.4 °C | 86.61 mm |
| September | 14.2 °C | 26 °C | 115.57 mm |
| October | 7.4 °C | 20.6 °C | 91.69 mm |
| November | 1.7 °C | 14.8 °C | 90.42 mm |
| December | -1.6 °C | 9.6 °C | 94.23 mm |
| Annual | 7.4 °C | 19.6 °C | 1149.85 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |