Afton, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.1 °C (low) to 18.3 °C (high). Annual precipitation averages 1226.8 Millimeters. Afton 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.7 °C | 6.2 °C | 87.63 mm |
| February | -2.4 °C | 8.1 °C | 71.63 mm |
| March | 0.7 °C | 12.3 °C | 106.43 mm |
| April | 6.3 °C | 18.9 °C | 97.03 mm |
| May | 11.4 °C | 23.1 °C | 103.38 mm |
| June | 15.3 °C | 27.6 °C | 113.79 mm |
| July | 18.6 °C | 29.4 °C | 113.28 mm |
| August | 17.6 °C | 28.8 °C | 98.81 mm |
| September | 12.9 °C | 25.3 °C | 145.54 mm |
| October | 7.6 °C | 19.6 °C | 102.87 mm |
| November | 2.3 °C | 13 °C | 89.15 mm |
| December | -1.3 °C | 7.8 °C | 97.28 mm |
| Annual | 7.1 °C | 18.3 °C | 1226.82 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |