Toms Brook, Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 18.6 °C (high). Annual precipitation averages 989.6 Millimeters. Toms Brook is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 5.8 °C | 68.83 mm |
| February | -4.2 °C | 7.7 °C | 56.13 mm |
| March | -0.5 °C | 12.3 °C | 76.96 mm |
| April | 4.9 °C | 18.9 °C | 75.69 mm |
| May | 10.3 °C | 23.4 °C | 107.95 mm |
| June | 15.2 °C | 27.9 °C | 109.98 mm |
| July | 17.4 °C | 30.2 °C | 95.5 mm |
| August | 16.6 °C | 29.4 °C | 84.84 mm |
| September | 12.4 °C | 25.9 °C | 105.41 mm |
| October | 6.1 °C | 19.8 °C | 71.88 mm |
| November | 0.7 °C | 13.4 °C | 65.79 mm |
| December | -2.9 °C | 7.9 °C | 70.61 mm |
| Annual | 5.9 °C | 18.6 °C | 989.57 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |