Damascus, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.3 °C (low) to 19 °C (high). Annual precipitation averages 1298.7 Millimeters. Damascus 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 | 6.8 °C | 116.59 mm |
| February | -3.5 °C | 9.3 °C | 87.63 mm |
| March | -0.1 °C | 14.1 °C | 103.63 mm |
| April | 4.4 °C | 19.3 °C | 120.9 mm |
| May | 9.1 °C | 23.8 °C | 119.38 mm |
| June | 14.4 °C | 27.5 °C | 129.29 mm |
| July | 15.8 °C | 29.4 °C | 135.13 mm |
| August | 15.4 °C | 28.9 °C | 123.95 mm |
| September | 12.2 °C | 25.7 °C | 89.15 mm |
| October | 4.9 °C | 20.8 °C | 77.47 mm |
| November | -0.4 °C | 14.1 °C | 88.39 mm |
| December | -3.1 °C | 8.8 °C | 107.19 mm |
| Annual | 5.3 °C | 19 °C | 1298.7 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 | Dfb - Humid Continental Mild Summer, Wet All Year |