Weyers Cave, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.1 °C (low) to 18.8 °C (high). Annual precipitation averages 996.4 Millimeters. Weyers Cave 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 | -4.8 °C | 6.6 °C | 69.6 mm |
| February | -3.6 °C | 8.4 °C | 56.13 mm |
| March | -0.3 °C | 12.8 °C | 81.53 mm |
| April | 5 °C | 19.2 °C | 82.3 mm |
| May | 10.4 °C | 23.6 °C | 98.55 mm |
| June | 15.4 °C | 28.1 °C | 103.63 mm |
| July | 17.6 °C | 30 °C | 102.36 mm |
| August | 16.7 °C | 29.3 °C | 91.19 mm |
| September | 12.9 °C | 25.8 °C | 101.35 mm |
| October | 6.1 °C | 19.9 °C | 66.55 mm |
| November | 0.4 °C | 13.7 °C | 67.56 mm |
| December | -2.9 °C | 8.4 °C | 75.69 mm |
| Annual | 6.1 °C | 18.8 °C | 996.44 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |