Poquoson, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.7 °F (low) to 68.3 °F (high). Annual precipitation averages 50.1 Inches. Poquoson is located in USDA Plant Hardiness Zone 8b. 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 | 33.9 °F | 48.6 °F | 3.65 in. |
| February | 35.3 °F | 51.2 °F | 2.97 in. |
| March | 41.4 °F | 57.5 °F | 3.87 in. |
| April | 51.1 °F | 67.7 °F | 3.47 in. |
| May | 60.2 °F | 75.2 °F | 4.01 in. |
| June | 69.0 °F | 82.9 °F | 4.51 in. |
| July | 73.5 °F | 87.4 °F | 5.14 in. |
| August | 72.4 °F | 85.2 °F | 5.8 in. |
| September | 67.4 °F | 80.0 °F | 5.08 in. |
| October | 56.4 °F | 70.5 °F | 4.61 in. |
| November | 45.4 °F | 60.4 °F | 3.4 in. |
| December | 38.4 °F | 52.7 °F | 3.63 in. |
| Annual | 53.7 °F | 68.3 °F | 50.14 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |