Wattsville, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.8 °C (low) to 19.4 °C (high). Annual precipitation averages 1159 Millimeters. Wattsville is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.2 °C | 8.4 °C | 87.63 mm |
| February | -0.5 °C | 9.4 °C | 76.71 mm |
| March | 3.1 °C | 13 °C | 104.65 mm |
| April | 8.1 °C | 18.3 °C | 84.33 mm |
| May | 13.4 °C | 23.1 °C | 86.36 mm |
| June | 18.5 °C | 27.8 °C | 94.49 mm |
| July | 21.3 °C | 30.3 °C | 104.9 mm |
| August | 20.2 °C | 29.3 °C | 116.84 mm |
| September | 17.2 °C | 26.4 °C | 118.11 mm |
| October | 10.9 °C | 20.9 °C | 107.44 mm |
| November | 5 °C | 15.2 °C | 77.98 mm |
| December | 1.3 °C | 10.8 °C | 99.57 mm |
| Annual | 9.8 °C | 19.4 °C | 1159.01 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |