December weather forecast
Douglas, MA

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Weather in December

December, the first month of the winter in Douglas, is also an icy month, with an average temperature fluctuating between 27.3°F (-2.6°C) and 38.3°F (3.5°C).

Temperature

In Douglas, the average high-temperature in December decreases from a chilly 48.7°F (9.3°C) in November to an icy 38.3°F (3.5°C). An average low-temperature of 27.3°F (-2.6°C) is recorded in the month of December.

Humidity

The average relative humidity in December is 78%.

Rainfall

The month with the most rainfall is December, when the rain falls for 10.3 days and typically aggregates up to 3.15" (80mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Douglas, during December, snow falls for 5 days and regularly aggregates up to 3.03" (77mm) of snow. Throughout the year, there are 32.5 snowfall days, and 18.78" (477mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 6:56 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:25 pm EST.

Sunshine

In December, the average sunshine 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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

During December, Douglas experiences an average high-temperature of 38.3°F (3.5°C) and a low-temperature of 27.3°F (-2.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 10.3 days and typically aggregates up to 3.15" (80mm) of precipitation.

How much does it rain in December?

In Douglas, in December, it is raining for 10.3 days, with typically 3.15" (80mm) of accumulated precipitation.

How much does it snow in December?

In Douglas, in December, during 5 snowfall days, 3.03" (77mm) of snow is typically accumulated.

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?

In Douglas, Massachusetts, the average day length in December is 9h and 10min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:56 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:25 pm EST.

How long on average sun shines in December?

In Douglas, Massachusetts, the average sunshine duration in December is 4.8h.

What are the months with 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?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
Douglas, MA

Average temperature in December - Douglas, MA
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in December
Douglas, MA

Average pressure in December - Douglas, 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).

Average wind speed in December
Douglas, MA

Average wind speed in December - Douglas, MA
  • Average wind speed in December: 8.5mph

The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December
Douglas, MA

Average humidity in December - Douglas, MA
  • Average humidity in December: 78%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

Average rainfall in December
Douglas, MA

Average rainfall in December - Douglas, MA
  • Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in December
Douglas, MA

Average rainfall days in December - Douglas, MA
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in December
Douglas, MA

Average snowfall in December - Douglas, MA
  • Average snowfall in December: 3.03"

The month with the highest snowfall is March (4.92").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Douglas, MA

Average snowfall days in December - Douglas, MA
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Douglas, 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 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Douglas, MA

Average sunshine days in December - Douglas, MA
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in December
Douglas, MA

Average UV index in December - Douglas, 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).

Average cloud cover in December
Douglas, MA

Average cloud cover in December - Douglas, 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 36).

Average visibility in December
Douglas, MA

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

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

Douglas, Massachusetts, USA

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