West Tisbury, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 6.9 °C (low) to 14.8 °C (high). Annual precipitation averages 1222.3 Millimeters. West Tisbury 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 | -3.9 °C | 4 °C | 107.95 mm |
| February | -3.6 °C | 4.4 °C | 93.98 mm |
| March | -0.7 °C | 7.2 °C | 134.11 mm |
| April | 4.2 °C | 12.3 °C | 110.74 mm |
| May | 9.3 °C | 17.4 °C | 87.38 mm |
| June | 14.4 °C | 22.3 °C | 86.87 mm |
| July | 18.2 °C | 25.8 °C | 67.06 mm |
| August | 17.9 °C | 25.7 °C | 86.61 mm |
| September | 14.6 °C | 22.6 °C | 92.2 mm |
| October | 9.2 °C | 17.1 °C | 122.43 mm |
| November | 4.1 °C | 12 °C | 106.17 mm |
| December | -0.5 °C | 7.2 °C | 126.75 mm |
| Annual | 6.9 °C | 14.8 °C | 1222.25 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |