December weather forecast
Newton Highlands, MA

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Weather in December

The first month of the winter, December, is also a wintry month in Newton Highlands, Massachusetts, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 28.8°F (-1.8°C).

Temperature

The decrease of average high-temperatures is mild in December, with a decline from a frosty 49.3°F (9.6°C) in November to a wintry 39.2°F (4°C). Newton Highlands's temperature in December lowers to a consistent average of 28.8°F (-1.8°C) during the nights.

Humidity

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

Rainfall

In December, the rain falls for 6.1 days. Throughout December, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Newton Highlands are January through May, November and December. December is the month with the most snowfall in Newton Highlands. Snow falls for 2.6 days and accumulates 0.91" (23mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:13 pm. On the last day of December, in Newton Highlands, sunrise is at 7:13 am and sunset at 4:22 pm EST.

Sunshine

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. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during December translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

Is December cold in Newton Highlands?

An average high-temperature, in December, in Newton Highlands, is 39.2°F (4°C) and the average low-temperature is 28.8°F (-1.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is appraised at 84.2°F (29°C).

What is the average humidity in December in Newton Highlands?

In December, the average relative humidity is 76%.

How much does it rain in Newton Highlands in December?

In Newton Highlands, in December, during 6.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

When does it snow the most in Newton Highlands?

The month with the most snowfall in Newton Highlands, Massachusetts, is December, when snow falls for 2.6 days and typically aggregates up to 0.91" (23mm) of snow.

How much does it snow in Newton Highlands in December?

In Newton Highlands, Massachusetts, during December, snow falls for 2.6 days and regularly aggregates up to 0.91" (23mm) of snow.

What is the month with the shortest days in Newton Highlands?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

How many hours of daylight does Newton Highlands have in December?

The average day length in December is 9h and 9min.

When are sunrise and sunset in December in Newton Highlands?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:22 pm EST.

How long on average sun shines in December in Newton Highlands?

In Newton Highlands, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Newton Highlands?

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

How high is the UV index in December in Newton Highlands?

The average daily maximum UV index in December in Newton Highlands is 2. A UV Index reading of 2, and below, represents a low health risk 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
Newton Highlands, MA

Average temperature in December - Newton Highlands, MA
  • Average high temperature in December: 39.2°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 (33.6°F).

  • Average low temperature in December: 28.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in December
Newton Highlands, MA

Average pressure in December - Newton Highlands, MA
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Newton Highlands, MA

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

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in December
Newton Highlands, MA

Average humidity in December - Newton Highlands, 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%).

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Average rainfall in December
Newton Highlands, MA

Average rainfall in December - Newton Highlands, MA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").

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Average rainfall days in December
Newton Highlands, MA

Average rainfall days in December - Newton Highlands, MA
  • Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall in December
Newton Highlands, MA

Average snowfall in December - Newton Highlands, MA
  • Average snowfall in December: 0.91"

The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Newton Highlands, MA

Average snowfall days in December - Newton Highlands, MA
  • Average snowfall days in December: 2.6 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Newton Highlands, MA

Average daylight in December / Average sunshine in December - Newton Highlands, 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 6min).

  • Average sunshine in December: 4h and 5min

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 42min).

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Average sunshine days in December
Newton Highlands, MA

Average sunshine days in December - Newton Highlands, MA
  • Average sunshine days in December: 22.2 days

The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).

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Average UV index in December
Newton Highlands, MA

Average UV index in December - Newton Highlands, 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
Newton Highlands, MA

Average cloud cover in December - Newton Highlands, MA
  • Average cloud cover in December: 46

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in December
Newton Highlands, MA

Average visibility in December - Newton Highlands, 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).

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Newton Highlands, Massachusetts, USA

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