Big Island, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.7 °F (low) to 67.9 °F (high). Annual precipitation averages 50.7 Inches. Big Island is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.8 °F | 46.8 °F | 3.6 in. |
| February | 27.1 °F | 50.7 °F | 3.08 in. |
| March | 33.6 °F | 59.0 °F | 4.15 in. |
| April | 43.1 °F | 69.1 °F | 4.73 in. |
| May | 52.8 °F | 76.1 °F | 4.96 in. |
| June | 60.9 °F | 83.6 °F | 5.15 in. |
| July | 64.9 °F | 87.2 °F | 4.08 in. |
| August | 63.9 °F | 85.2 °F | 3.59 in. |
| September | 56.9 °F | 78.9 °F | 5.41 in. |
| October | 44.4 °F | 69.1 °F | 3.71 in. |
| November | 34.1 °F | 59.6 °F | 3.96 in. |
| December | 28.4 °F | 50.0 °F | 4.24 in. |
| Annual | 44.7 °F | 67.9 °F | 50.66 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |