December weather forecast
Newton Highlands, MA

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Weather in December

The first month of the winter, December, is still a cold month in Newton Highlands, Massachusetts, with an average temperature ranging between max 39.2°F (4°C) and min 28.8°F (-1.8°C).

Temperature

With the onset of December, Newton Highlands experiences a modest temperature adjustment, with the average high-temperature receding from a frosty 49.3°F (9.6°C) in November to an icy 39.2°F (4°C). The low-temperature average for Newton Highlands during December stands at a freezing cold 28.8°F (-1.8°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Newton Highlands, in December, during 6.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 2.6 days and typically aggregates up to 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, sunrise is at 7:13 am and sunset at 4:22 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

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 threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

During December, Newton Highlands experiences an average high-temperature of 39.2°F (4°C) and a low-temperature of 28.8°F (-1.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 84.2°F (29°C).

What is the average humidity in December?

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

How much does it rain in Newton Highlands in December?

In December, the rain falls for 6.1 days. Throughout December, 0.55" (14mm) of precipitation is accumulated.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 2.6 days and accumulates 0.91" (23mm) of snow.

How many days does it snow in December?

In Newton Highlands, in December, during 2.6 snowfall days, 0.91" (23mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

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

In Newton Highlands, the average day length in December is 9h and 9min.

What time are sunrise and sunset in December?

On the first day of December, 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 December, the average sunshine duration is 4.9h.

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 in Newton Highlands.

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 low health risk from exposure to the Sun's 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Newton Highlands, Massachusetts, USA

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