Palmyra, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.5 °C (low) to 20.4 °C (high). Annual precipitation averages 1122.7 Millimeters. Palmyra is located in USDA Plant Hardiness Zone 7a. 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 | -4.3 °C | 8.4 °C | 79.76 mm |
| February | -3.6 °C | 10.3 °C | 70.87 mm |
| March | 0 °C | 14.9 °C | 98.55 mm |
| April | 5.4 °C | 21.2 °C | 85.6 mm |
| May | 10.9 °C | 24.9 °C | 103.63 mm |
| June | 15.8 °C | 29.2 °C | 105.16 mm |
| July | 18.3 °C | 31.4 °C | 105.92 mm |
| August | 17.3 °C | 30.6 °C | 90.93 mm |
| September | 13.6 °C | 27.1 °C | 109.98 mm |
| October | 6.4 °C | 21.4 °C | 94.74 mm |
| November | 0.4 °C | 15.5 °C | 86.87 mm |
| December | -2.7 °C | 10.3 °C | 90.68 mm |
| Annual | 6.5 °C | 20.4 °C | 1122.69 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 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 |