December weather forecast
Braintree, MA

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Weather in December

December, the first month of the winter in Braintree, is still a cold month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 29.8°F (-1.2°C).

Temperature

The onset of December brings a small change in high-temperatures, falling from a frosty 49.5°F (9.7°C) in November to a wintry 40.1°F (4.5°C). An average minimum temperature of 29.8°F (-1.2°C) is recorded during the month of December.

Humidity

In Braintree, the average relative humidity in December is 76%.

Rainfall

In Braintree, in December, during 6 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 89.5 rainfall days, and 6.61" (168mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In Braintree, in December, snow falls for 3.2 days, with typically accumulated 0.55" (14mm) of snow. In Braintree, during the entire year, snow falls for 18.1 days and aggregates up to 2.87" (73mm) of snow.

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 6:53 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:22 pm EST.

Sunshine

In December, the average sunshine is 4.7h.

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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.

Frequently asked questions

How cold is it in December?

The high-temperature during December is 40.1°F (4.5°C) and the low-temperature is 29.8°F (-1.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How many days does it rain in December?

In Braintree, during December, the rain falls for 6 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many days does it snow in December?

In Braintree, during December, snow falls for 3.2 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Braintree have in December?

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

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:53 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:22 pm EST.

How long on average sun shines in December in Braintree?

In December, the average sunshine duration is 4.7h.

What is the month with the lowest UV index?

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

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 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
Braintree, MA

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

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 29.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in December
Braintree, MA

Average pressure in December - Braintree, 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
Braintree, MA

Average wind speed in December - Braintree, MA
  • Average wind speed in December: 9.2mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in December
Braintree, MA

Average humidity in December - Braintree, MA
  • Average humidity in December: 76%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).

Average rainfall in December
Braintree, MA

Average rainfall in December - Braintree, MA
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is April (0.79").
The driest month (with the least rainfall) is September (0.31").

Average rainfall days in December
Braintree, MA

Average rainfall days in December - Braintree, MA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in December
Braintree, MA

Average snowfall in December - Braintree, MA
  • Average snowfall in December: 0.55"

The month with the highest snowfall is March (0.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Braintree, MA

Average snowfall days in December - Braintree, MA
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (4.6 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
Braintree, MA

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

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Braintree, MA

Average sunshine days in December - Braintree, MA
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is April (17.8 days).

Average UV index in December
Braintree, MA

Average UV index in December - Braintree, 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
Braintree, MA

Average cloud cover in December - Braintree, MA
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Braintree, MA

Average visibility in December - Braintree, 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).

Braintree, Massachusetts, USA

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