MARTHA'S VINEYARD, MASSACHUSETTS

This climate is characterized by relatively high temperatures and evenly distributed precipitation throughout the year. This climate type is found on the eastern sides of the continents between 20° and 35° N and S latitude. In summer, these regions are largely under the influence of moist, maritime airflow from the western side of the subtropical anticyclonic cells over low-latitude ocean waters. Temperatures are high and can lead to warm, oppressive nights. Summers are usually somewhat wetter than winters, with much of the rainfall coming from convectional thunderstorm activity; tropical cyclones also enhance warm-season rainfall in some regions. The coldest month is usually quite mild, although frosts are not uncommon, and winter precipitation is derived primarily from frontal cyclones along the polar front.

The Köppen Climate Classification subtype for this climate is "Cfa". (Humid Subtropical Climate).

The average temperature for the year in Martha's Vineyard is 49.0°F (9.4°C). The warmest month, on average, is July with an average temperature of 69.0°F (20.6°C). The coolest month on average is January, with an average temperature of 31.0°F (-0.6°C).

The highest recorded temperature in Martha's Vineyard is 99.0°F (37.2°C), which was recorded in August. The lowest recorded temperature in Martha's Vineyard is -7.0°F (-21.7°C), which was recorded in February.

The average amount of precipitation for the year in Martha's Vineyard is 46.5" (1181.1 mm). The month with the most precipitation on average is August with 5.0" (127 mm) of precipitation. The month with the least precipitation on average is June with an average of 2.6" (66 mm). In terms of liquid precipitation, there are an average of 79.3 days of rain, with the most rain occurring in August with 7.8 days of rain, and the least rain occurring in June with 5.0 days of rain.

In Martha's Vineyard, there's an average of 36.2" of snow (0 cm). The month with the most snow is March, with 10.7" of snow (27.2 cm).