December weather forecast
Attleboro, MA

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Weather in December

December sees Attleboro firmly in the grasp of winter. The noticeable increase of snowfall up to 2.32" (59mm) creates a winter wonderland. The temperatures drop significantly, bringing with them a chilling wind that whistles through the city streets. This is a time of wrapping up, both metaphorically and literally, with coats and scarfs being essentials. Guided by the seasonal changes, the city anticipates the dawn of a new year, hoping it will bring peaceful and sunny days like those in the past January.

Temperature

The onset of December in Attleboro coincides with a reduction in the average high-temperature, falling from a cool 50°F (10°C) in November to a cold 40.1°F (4.5°C). In December, Attleboro reports a consistent average low-temperature of 29.3°F (-1.5°C) during the nights.

Humidity

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

Rainfall

In Attleboro, during December, the rain falls for 11.2 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Attleboro, during the entire year, the rain falls for 149.9 days and collects up to 29.09" (739mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In December, in Attleboro, Massachusetts, it is snowing for 5.1 days. Throughout December, 2.32" (59mm) of snow is accumulated. Throughout the year, there are 29.8 snowfall days, and 14.13" (359mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Attleboro, with an average of 9h and 12min of daylight.
On the first day of December in Attleboro, Massachusetts, sunrise is at 6:54 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:24 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index in Attleboro, Massachusetts, are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in Attleboro in December?

In December, in Attleboro, the average high-temperature is 40.1°F (4.5°C), and the average low-temperature is 29.3°F (-1.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is evaluated at 87.8°F (31°C).

What is the average humidity in December in Attleboro?

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

How many days does it rain in December in Attleboro?

In Attleboro, during December, the rain falls for 11.2 days and regularly aggregates up to 2.95" (75mm) of precipitation.

How much does it snow in Attleboro in December?

In Attleboro, in December, snow falls for 5.1 days, with typically accumulated 2.32" (59mm) of snow.

What is the month with the shortest days in Attleboro?

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

How many hours of daylight does Attleboro have in December?

In Attleboro, the average day length in December is 9h and 11min.

What time are sunrise and sunset in December in Attleboro?

On the first day of December in Attleboro, Massachusetts, sunrise is at 6:54 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:24 pm EST.

How many hours of sunshine does Attleboro have in December?

The average sunshine duration in December in Attleboro is 4.9h.

What is the month with 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, Massachusetts.

How high is the UV index in December in Attleboro?

In Attleboro, Massachusetts, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
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"Hg

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

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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%

The 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").
The 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).
The 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: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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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

The months with the highest UV index are June, July and August (UV index 6).
The 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

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

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Attleboro, Massachusetts, USA

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