December weather forecast
Mashpee, MA

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Weather in December

December takes Mashpee into winter's heart, with temperatures dropping further down to between 35.6°F (2°C) and 43.3°F (6.3°C). However, the arrival of winter doesn't dampen the town's spirits, rather it sparks a different vibrancy with holiday festivities. White snowflake showers transforming the town into a serene wonderland marks the mesmerizing charm of a Mashpee winter. With longer nights and crisply cold days, December instills a sense of calm yet festive spirit. As the hustling year draws to a close, the tranquil weather, amplified by holidays, providentially caps the annual climatic journey of Mashpee.

Temperature

The transition into December involves a small decrease in the average high-temperature, dipping slightly from a cool 50.9°F (10.5°C) in November to a frosty 43.3°F (6.3°C). December nights reflect a consistent temperature dip to a cold 35.6°F (2°C), a slight descent from daytime peaks.

Humidity

The average relative humidity in December is 75%.

Rainfall

December is the month with the most rainfall. Rain falls for 12.7 days and accumulates 3.7" (94mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 3.5 days. Throughout December, 0.91" (23mm) of snow is accumulated. Throughout the year, there are 21 snowfall days, and 7.05" (179mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:49 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:21 pm EST.

Sunshine

In Mashpee, the average sunshine in December is 4.7h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold does it get in December?

December temperatures vary between a high-temperature of 43.3°F (6.3°C) and a low-temperature of 35.6°F (2°C).

What is the average humidity in December?

The average relative humidity in December is 75%.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 12.7 days and accumulates 3.7" (94mm) of precipitation.

How much does it rain in December?

In Mashpee, during December, the rain falls for 12.7 days and regularly aggregates up to 3.7" (94mm) of precipitation.

How many days does it snow in December?

In December, it is snowing for 3.5 days. Throughout December, 0.91" (23mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In December, the average day length in Mashpee is 9h and 13min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:49 am and sunset at 4:12 pm. On the last day of the month, in Mashpee, sunrise is at 7:08 am and sunset at 4:21 pm EST.

How many hours of sunshine does Mashpee have in December?

The average sunshine duration in December is 4.7h.

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 value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Mashpee, MA

Average temperature in December - Mashpee, MA
  • Average high temperature in December: 43.3°F

The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 35.6°F

The month with the highest average low temperature is August (68.4°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Mashpee, MA

Average pressure in December - Mashpee, 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 (29.93"Hg).

Average wind speed in December
Mashpee, MA

Average wind speed in December - Mashpee, MA
  • Average wind speed in December: 14.9mph

The windiest month (with the highest average wind speed) is January (15.3mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).

Average humidity in December
Mashpee, MA

Average humidity in December - Mashpee, MA
  • Average humidity in December: 75%

The months with the highest relative humidity are May, June and July (82%).
The month with the lowest relative humidity is November (74%).

Average rainfall in December
Mashpee, MA

Average rainfall in December - Mashpee, MA
  • Average rainfall in December: 3.7"

The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December
Mashpee, MA

Average rainfall days in December - Mashpee, MA
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Mashpee, MA

Average snowfall in December - Mashpee, MA
  • Average snowfall in December: 0.91"

The month with the highest snowfall is March (2.36").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Mashpee, MA

Average snowfall days in December - Mashpee, MA
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (6.3 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
Mashpee, MA

Average daylight in December / Average sunshine in December - Mashpee, 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 4min

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 36min).

Average sunshine days in December
Mashpee, MA

Average sunshine days in December - Mashpee, MA
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is April (13 days).

Average UV index in December
Mashpee, MA

Average UV index in December - Mashpee, 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
Mashpee, MA

Average cloud cover in December - Mashpee, MA
  • Average cloud cover in December: 50

The months with the most cloud cover are March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Mashpee, MA

Average visibility in December - Mashpee, 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).

Mashpee, Massachusetts, USA

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