December weather forecast
Great Barrington, MA

The colorful ancient stone building that hosts the town hall of Great Barrington in Massachusetts
The colorful ancient stone building that hosts the town hall of Great Barrington in Massachusetts

Weather in December

December, the first month of the winter, in Great Barrington, is still a cold month, with average temperature fluctuating between 34.9°F (1.6°C) and 23.9°F (-4.5°C).

Temperature

In Great Barrington, the average high-temperature decreases, from a chilly 45.5°F (7.5°C) in November, to a cold 34.9°F (1.6°C). In Great Barrington, in December, the average low-temperature is 23.9°F (-4.5°C).

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Great Barrington, during 11.2 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, there are 157.8 rainfall days, and 31.69" (805mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Great Barrington are January through May, October through December. In Great Barrington, snow falls for 10 days, with typically accumulated 5.55" (141mm) of snow. In Great Barrington, during the entire year, snow falls for 55.3 days, and aggregates up to 29.17" (741mm) of snow.

Daylight

With an average of 9.2h of daylight, December has the shortest days of the year in Great Barrington.

Sunshine

The average sunshine in Great Barrington is 4.3h.

UV index

The month with the lowest UV index in Great Barrington is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Great Barrington?

The average relative humidity in December is 83%.

How many days does it rain in December in Great Barrington?

In Great Barrington, Massachusetts, in December, during 11.2 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

How many days does it snow in December in Great Barrington?

In Great Barrington, Massachusetts, in December, during 10 snowfall days, 5.55" (141mm) of snow is typically accumulated.

What is the month with the shortest days in Great Barrington?

With an average of 9.2h of daylight, December has the shortest days of the year.

How many hours of daylight does Great Barrington have in December?

In December, the average length of the day in Great Barrington, Massachusetts, is 9.2h.

How long on average sun shines in December in Great Barrington?

In December, the average sunshine is 4.3h.

When is the lowest UV index in Great Barrington?

December is the month with the lowest UV index in Great Barrington, Massachusetts, with an average maximum UV index of 1.

How high is the UV index in December in Great Barrington?

In December, the average daily maximum UV index in Great Barrington is 1. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Great Barrington, MA

Average temperature in December - Great Barrington, MA
  • Average high temperature in December: 34.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in December
Great Barrington, MA

Average pressure in December - Great Barrington, MA
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
Great Barrington, MA

Average wind speed in December - Great Barrington, MA
  • Average wind speed in December: 8mph

The windiest months (with the highest average wind speed) are January and March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in December
Great Barrington, MA

Average humidity in December - Great Barrington, MA
  • Average humidity in December: 83%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in December
Great Barrington, MA

Average rainfall in December - Great Barrington, MA
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (2.13").

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Average rainfall days in December
Great Barrington, MA

Average rainfall days in December - Great Barrington, MA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in December
Great Barrington, MA

Average snowfall in December - Great Barrington, MA
  • Average snowfall in December: 5.55"

The month with the highest snowfall is February (6.89").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Great Barrington, MA

Average snowfall days in December - Great Barrington, MA
  • Average snowfall days in December: 10 days

The month with the highest number of snowfall days is February (13.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Great Barrington, MA

Average daylight in December / Average sunshine in December - Great Barrington, MA
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 4.3h

Months with the most sunshine are July and August (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 3.9h).

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Average sunshine days in December
Great Barrington, MA

Average sunshine days in December - Great Barrington, MA
  • Average sunshine days in December: 13.4 days

Months with the most sunshine days are September and November (15.5 days).
The month with the least sunshine days is February (11.1 days).

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Average UV index in December
Great Barrington, MA

Average UV index in December - Great Barrington, MA
  • Average UV index in December: 1

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Great Barrington, MA

Average cloud cover in December - Great Barrington, MA
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 57).
Months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in December
Great Barrington, MA

Average visibility in December - Great Barrington, MA
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

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