December weather forecast and climate
Attleboro, MA

Weather in December

The first month of the winter, December, is also a wintry month in Attleboro, Massachusetts, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 40.1°F (4.5°C).

Temperature

In Attleboro, the average high-temperature in December drops, from a cool 50°F (10°C) in November, to a cold 40.1°F (4.5°C). In December, the average low-temperature is 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Attleboro, it is raining for 11.2 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, in Attleboro, Massachusetts, there are 149.9 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Attleboro are January through May, November and December. In Attleboro, snow falls for 5.1 days, with typically accumulated 2.32" (59mm) of snow. In Attleboro, during the entire year, snow falls for 29.8 days, and aggregates up to 14.13" (359mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9.2h of daylight.

Sunshine

In Attleboro, the average sunshine in December is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Attleboro. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Attleboro?

In December, in Attleboro, Massachusetts, the average high-temperature is 40.1°F (4.5°C), and the average low-temperature is 29.3°F (-1.5°C).

What is the average humidity in December in Attleboro?

In Attleboro, Massachusetts, the average relative humidity in December is 77%.

How many days does it rain in December in Attleboro?

In Attleboro, Massachusetts, in December, it is raining for 11.2 days, with typically 2.95" (75mm) of accumulated precipitation.

How many days does it snow in December in Attleboro?

In Attleboro, in December, during 5.1 snowfall days, 2.32" (59mm) of snow is typically accumulated.

What is the month with the shortest days in Attleboro?

The month with the shortest days in Attleboro, Massachusetts, is December, with an average of 9.2h of daylight.

What is the average length of the day in December in Attleboro?

In Attleboro, the average length of the day in December is 9.2h.

How many hours of sunshine does Attleboro have in December?

In Attleboro, Massachusetts, the average sunshine in December is 4.9h.

When is the lowest UV index in Attleboro?

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

How high is the UV index in December in Attleboro?

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

Average temperature in December
Attleboro, MA

Average temperature in December - Attleboro, MA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Attleboro, MA

Average pressure in December - Attleboro, MA
  • Average pressure in December: 30.04"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
Attleboro, MA

Average wind speed in December - Attleboro, MA
  • Average wind speed in December: 8.6mph

The windiest months (with the highest average wind speed) are February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in December
Attleboro, MA

Average humidity in December - Attleboro, MA
  • Average humidity in December: 77%

Months with the highest relative humidity are February, June, September and October (78%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in December
Attleboro, MA

Average rainfall in December - Attleboro, MA
  • Average rainfall in December: 2.95"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.34").

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Average rainfall days in December
Attleboro, MA

Average rainfall days in December - Attleboro, MA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in December
Attleboro, MA

Average snowfall in December - Attleboro, MA
  • Average snowfall in December: 2.32"

The month with the highest snowfall is March (4.06").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Attleboro, MA

Average snowfall days in December - Attleboro, MA
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is January (7.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Attleboro, MA

Average daylight in December / Average sunshine in December - Attleboro, 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: 4.9h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in December
Attleboro, MA

Average sunshine days in December - Attleboro, MA
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in December
Attleboro, MA

Average UV index in December - Attleboro, MA
  • Average UV index in December: 2

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

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Average cloud cover in December
Attleboro, MA

Average cloud cover in December - Attleboro, MA
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
Attleboro, MA

Average visibility in December - Attleboro, MA
  • Average visibility in December: 6mi

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

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