Belle Haven, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.2 °F (low) to 67.7 °F (high). Annual precipitation averages 46.7 Inches. Belle Haven 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.6 °F | 47.6 °F | 3.53 in. |
| February | 31.6 °F | 49.6 °F | 3.04 in. |
| March | 37.8 °F | 55.9 °F | 4.03 in. |
| April | 47.4 °F | 66.5 °F | 3.38 in. |
| May | 56.9 °F | 74.9 °F | 3.61 in. |
| June | 65.9 °F | 83.1 °F | 4.12 in. |
| July | 70.8 °F | 87.4 °F | 4.74 in. |
| August | 68.7 °F | 85.3 °F | 4.58 in. |
| September | 63.3 °F | 80.2 °F | 4.47 in. |
| October | 52.5 °F | 70.5 °F | 4.19 in. |
| November | 41.6 °F | 59.8 °F | 3.09 in. |
| December | 34.8 °F | 51.7 °F | 3.92 in. |
| Annual | 50.2 °F | 67.7 °F | 46.7 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |