Wytheville, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.2 °F (low) to 64.1 °F (high). Annual precipitation averages 41.9 Inches. Wytheville 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 | 23.0 °F | 42.5 °F | 3.18 in. |
| February | 25.0 °F | 46.1 °F | 2.87 in. |
| March | 31.1 °F | 54.3 °F | 3.63 in. |
| April | 39.6 °F | 64.7 °F | 3.78 in. |
| May | 48.7 °F | 72.7 °F | 4.33 in. |
| June | 56.6 °F | 79.6 °F | 4.25 in. |
| July | 60.6 °F | 82.9 °F | 3.99 in. |
| August | 59.2 °F | 81.9 °F | 3.69 in. |
| September | 52.8 °F | 76.5 °F | 3.41 in. |
| October | 40.9 °F | 66.6 °F | 2.99 in. |
| November | 31.1 °F | 55.7 °F | 2.56 in. |
| December | 26.0 °F | 46.1 °F | 3.19 in. |
| Annual | 41.2 °F | 64.1 °F | 41.87 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |