Sugar Grove, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.9 °F (low) to 63.4 °F (high). Annual precipitation averages 49.5 Inches. Sugar Grove is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.4 °F | 42.5 °F | 4.27 in. |
| February | 25.4 °F | 46.0 °F | 3.5 in. |
| March | 30.8 °F | 53.9 °F | 4.04 in. |
| April | 38.8 °F | 63.6 °F | 4.32 in. |
| May | 47.5 °F | 71.6 °F | 5.26 in. |
| June | 55.4 °F | 78.3 °F | 4.83 in. |
| July | 60.8 °F | 81.4 °F | 4.7 in. |
| August | 59.4 °F | 80.6 °F | 4.44 in. |
| September | 53.0 °F | 75.3 °F | 3.59 in. |
| October | 41.3 °F | 65.6 °F | 3.21 in. |
| November | 30.1 °F | 55.4 °F | 3.24 in. |
| December | 25.4 °F | 46.2 °F | 4.08 in. |
| Annual | 40.9 °F | 63.4 °F | 49.48 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |