Benns Church, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.5 °C (low) to 20.8 °C (high). Annual precipitation averages 1263.1 Millimeters. Benns Church is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.7 °C | 9.8 °C | 90.17 mm |
| February | 1.4 °C | 11.3 °C | 72.9 mm |
| March | 5 °C | 14.9 °C | 103.12 mm |
| April | 10.3 °C | 20.7 °C | 93.98 mm |
| May | 15.3 °C | 24.8 °C | 103.63 mm |
| June | 19.9 °C | 29.1 °C | 114.55 mm |
| July | 22.4 °C | 31.4 °C | 124.71 mm |
| August | 21.8 °C | 30.3 °C | 143.76 mm |
| September | 18.9 °C | 27.3 °C | 137.41 mm |
| October | 12.4 °C | 21.9 °C | 98.55 mm |
| November | 6.5 °C | 16.3 °C | 86.11 mm |
| December | 2.8 °C | 11.9 °C | 94.23 mm |
| Annual | 11.5 °C | 20.8 °C | 1263.12 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |