Waynesboro, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.6 °C (low) to 18.6 °C (high). Annual precipitation averages 1109 Millimeters. Waynesboro 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 | -4.2 °C | 6.5 °C | 78.49 mm |
| February | -3 °C | 8.4 °C | 58.93 mm |
| March | 0.3 °C | 12.7 °C | 99.06 mm |
| April | 5.8 °C | 19.2 °C | 94.74 mm |
| May | 10.9 °C | 23.3 °C | 102.87 mm |
| June | 15.6 °C | 27.7 °C | 104.9 mm |
| July | 17.8 °C | 29.6 °C | 97.28 mm |
| August | 16.9 °C | 28.9 °C | 84.33 mm |
| September | 13.1 °C | 25.4 °C | 130.3 mm |
| October | 6.7 °C | 19.7 °C | 88.14 mm |
| November | 1.1 °C | 13.6 °C | 90.17 mm |
| December | -2.2 °C | 8.3 °C | 79.76 mm |
| Annual | 6.6 °C | 18.6 °C | 1108.97 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |