December weather forecast
West Tisbury, MA

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Weather in December

December, the first month of the winter in West Tisbury, is still a chilly month, with an average temperature fluctuating between 44.4°F (6.9°C) and 36.9°F (2.7°C).

Temperature

West Tisbury's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's cool 52.3°F (11.3°C) to a chilly 44.4°F (6.9°C). West Tisbury documents a consistent average low-temperature of 36.9°F (2.7°C) at night during December.

Humidity

The average relative humidity in December is 75%.

Rainfall

In December, the rain falls for 11.7 days. Throughout December, 2.56" (65mm) of precipitation is accumulated. In West Tisbury, during the entire year, the rain falls for 146.4 days and collects up to 25.47" (647mm) of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 4.6 snowfall days, it receives 0.67" (17mm) of snow. In West Tisbury, during the entire year, snow falls for 18.3 days and aggregates up to 3.94" (100mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in West Tisbury, Massachusetts.
On the first day of December, sunrise is at 6:49 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:23 pm EST.

Sunshine

In West Tisbury, the average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 in December translates into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold does it get in December?

In West Tisbury, in December, the average high-temperature is 44.4°F (6.9°C), and the average low-temperature is 36.9°F (2.7°C).

What is the average humidity in December?

The average relative humidity in December is 75%.

How many days does it rain in December?

In December, in West Tisbury, the rain falls for 11.7 days. Throughout December, 2.56" (65mm) of precipitation is accumulated.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 4.6 snowfall days, it receives 0.67" (17mm) of snow.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 15min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:49 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:23 pm EST.

How many hours of sunshine does West Tisbury have in December?

In West Tisbury, the average sunshine duration in December is 4.8h.

When is the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December?

In West Tisbury, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
West Tisbury, MA

Average temperature in December - West Tisbury, MA
  • Average high temperature in December: 44.4°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 36.9°F

The month with the highest average low temperature is August (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in December
West Tisbury, MA

Average pressure in December - West Tisbury, MA
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
West Tisbury, MA

Average wind speed in December - West Tisbury, MA
  • Average wind speed in December: 15.8mph

The windiest month (with the highest average wind speed) is January (16.2mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity in December
West Tisbury, MA

Average humidity in December - West Tisbury, MA
  • Average humidity in December: 75%

The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).

Average rainfall in December
West Tisbury, MA

Average rainfall in December - West Tisbury, MA
  • Average rainfall in December: 2.56"

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are August and November (1.73").

Average rainfall days in December
West Tisbury, MA

Average rainfall days in December - West Tisbury, MA
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is February (8.6 days).

Average snowfall in December
West Tisbury, MA

Average snowfall in December - West Tisbury, MA
  • Average snowfall in December: 0.67"

The month with the highest snowfall is March (1.18").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
West Tisbury, MA

Average snowfall days in December - West Tisbury, MA
  • Average snowfall days in December: 4.6 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
West Tisbury, MA

Average daylight in December / Average sunshine in December - West Tisbury, MA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
West Tisbury, MA

Average sunshine days in December - West Tisbury, MA
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is April (13.5 days).

Average UV index in December
West Tisbury, MA

Average UV index in December - West Tisbury, MA
  • Average UV index in December: 2

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
West Tisbury, MA

Average cloud cover in December - West Tisbury, MA
  • Average cloud cover in December: 50

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in December
West Tisbury, MA

Average visibility in December - West Tisbury, MA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

West Tisbury, Massachusetts, USA

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