Chincoteague, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 19 °C (high). Annual precipitation averages 1122.9 Millimeters. Chincoteague 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 | -0.7 °C | 7.8 °C | 90.68 mm |
| February | -0.1 °C | 8.8 °C | 76.71 mm |
| March | 3.3 °C | 11.8 °C | 104.65 mm |
| April | 8.1 °C | 17.7 °C | 78.99 mm |
| May | 13.4 °C | 22.3 °C | 89.15 mm |
| June | 18.7 °C | 27.1 °C | 96.27 mm |
| July | 21.7 °C | 29.7 °C | 95.5 mm |
| August | 20.8 °C | 29 °C | 105.41 mm |
| September | 17.9 °C | 26.3 °C | 112.01 mm |
| October | 11.8 °C | 21.3 °C | 104.39 mm |
| November | 6.1 °C | 15.3 °C | 74.68 mm |
| December | 2.1 °C | 10.8 °C | 94.49 mm |
| Annual | 10.3 °C | 19 °C | 1122.93 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |