Gloucester Courthouse, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50 °F (low) to 68.9 °F (high). Annual precipitation averages 50.3 Inches. Gloucester Courthouse is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.3 °F | 48.5 °F | 3.53 in. |
| February | 31.5 °F | 51.4 °F | 2.95 in. |
| March | 37.9 °F | 58.5 °F | 4.18 in. |
| April | 47.7 °F | 68.9 °F | 3.75 in. |
| May | 57.6 °F | 76.0 °F | 3.95 in. |
| June | 66.2 °F | 83.7 °F | 4.27 in. |
| July | 70.3 °F | 88.3 °F | 5.5 in. |
| August | 69.2 °F | 86.3 °F | 5.77 in. |
| September | 63.2 °F | 80.9 °F | 5.24 in. |
| October | 51.2 °F | 71.0 °F | 4.39 in. |
| November | 40.9 °F | 60.8 °F | 3.1 in. |
| December | 33.8 °F | 52.4 °F | 3.67 in. |
| Annual | 50 °F | 68.9 °F | 50.3 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |