Stanley, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6 °C (low) to 19 °C (high). Annual precipitation averages 1062 Millimeters. Stanley 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 | -4.9 °C | 6.6 °C | 74.68 mm |
| February | -3.8 °C | 8.4 °C | 56.9 mm |
| March | -0.3 °C | 12.8 °C | 82.3 mm |
| April | 5.2 °C | 19.4 °C | 84.07 mm |
| May | 10.4 °C | 23.9 °C | 104.39 mm |
| June | 15.2 °C | 28.4 °C | 115.06 mm |
| July | 17.3 °C | 30.5 °C | 103.63 mm |
| August | 16.4 °C | 29.5 °C | 91.44 mm |
| September | 12.7 °C | 26.2 °C | 116.84 mm |
| October | 6.3 °C | 20.3 °C | 79.25 mm |
| November | 0.7 °C | 13.9 °C | 74.93 mm |
| December | -2.7 °C | 8.5 °C | 78.49 mm |
| Annual | 6 °C | 19 °C | 1061.98 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 | Cfa - Humid Subtropical Climate |