Sedley, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.2 °C (low) to 21.5 °C (high). Annual precipitation averages 1265.7 Millimeters. Sedley is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.5 °C | 10.3 °C | 93.22 mm |
| February | -0.7 °C | 12 °C | 70.36 mm |
| March | 2.8 °C | 15.9 °C | 103.89 mm |
| April | 8.2 °C | 21.7 °C | 91.19 mm |
| May | 13.4 °C | 25.7 °C | 98.55 mm |
| June | 18.1 °C | 29.9 °C | 120.9 mm |
| July | 20.6 °C | 32 °C | 136.4 mm |
| August | 19.6 °C | 30.9 °C | 137.67 mm |
| September | 16.4 °C | 27.9 °C | 140.21 mm |
| October | 9.6 °C | 22.6 °C | 100.08 mm |
| November | 3.6 °C | 16.9 °C | 82.04 mm |
| December | 0.3 °C | 12.2 °C | 91.19 mm |
| Annual | 9.2 °C | 21.5 °C | 1265.7 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |