December weather forecast and climate
Newtonville, NJ

Weather in December

December, the first month of the winter, in Newtonville, is also a frosty month, with average temperature ranging between max 45.3°F (7.4°C) and min 34.2°F (1.2°C).

Temperature

In December, the average high-temperature marginally drops, from a cool 53.8°F (12.1°C) in November, to a chilly 45.3°F (7.4°C). In December, in Newtonville, the average low-temperature is 34.2°F (1.2°C).

Humidity

In December, the average relative humidity in Newtonville is 77%.

Rainfall

In Newtonville, in December, it is raining for 9.2 days, with typically 1.5" (38mm) of accumulated precipitation. In Newtonville, during the entire year, the rain falls for 119.7 days and collects up to 15" (381mm) of precipitation.

Snowfall

Months with snowfall in Newtonville, New Jersey, are January through April, November and December. In Newtonville, snow falls for 2.3 days, with typically accumulated 0.51" (13mm) of snow. In Newtonville, during the entire year, snow falls for 13.6 days, and aggregates up to 4.29" (109mm) of snow.

Daylight

The month with the shortest days in Newtonville is December, with an average of 9.4h of daylight.

Sunshine

In December, the average sunshine is 5h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Newtonville?

The average relative humidity in December is 77%.

How many days does it rain in December in Newtonville?

In December, in Newtonville, the rain falls for 9.2 days. Throughout December, 1.5" (38mm) of precipitation is accumulated.

How many days does it snow in December in Newtonville?

In Newtonville, in December, during 2.3 snowfall days, 0.51" (13mm) of snow is typically accumulated.

What is the month with the shortest days in Newtonville?

December has the shortest days of the year, with an average of 9.4h of daylight.

How many hours of daylight does Newtonville have in December?

The average length of the day in December is 9.4h.

How long on average sun shines in December in Newtonville?

The average sunshine in December in Newtonville, New Jersey, is 5h.

What is the month with the lowest UV index in Newtonville?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Newtonville.

What is the UV index intensity in December in Newtonville?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Newtonville, NJ

Average temperature in December - Newtonville, NJ
  • Average high temperature in December: 45.3°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure in December
Newtonville, NJ

Average pressure in December - Newtonville, NJ
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in December
Newtonville, NJ

Average wind speed in December - Newtonville, NJ
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in December
Newtonville, NJ

Average humidity in December - Newtonville, NJ
  • Average humidity in December: 77%

Months with the highest relative humidity are June, September and October (79%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Newtonville, NJ

Average rainfall in December - Newtonville, NJ
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in December
Newtonville, NJ

Average rainfall days in December - Newtonville, NJ
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is July (14.5 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in December
Newtonville, NJ

Average snowfall in December - Newtonville, NJ
  • Average snowfall in December: 0.51"

The month with the highest snowfall is January (1.38").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Newtonville, NJ

Average snowfall days in December - Newtonville, NJ
  • Average snowfall days in December: 2.3 days

The month with the highest number of snowfall days is January (4.5 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Newtonville, NJ

Average daylight in December / Average sunshine in December - Newtonville, NJ
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 5h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in December
Newtonville, NJ

Average sunshine days in December - Newtonville, NJ
  • Average sunshine days in December: 20 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in December
Newtonville, NJ

Average UV index in December - Newtonville, NJ
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Newtonville, NJ

Average cloud cover in December - Newtonville, NJ
  • Average cloud cover in December: 47

Months with the most cloud cover are February and March (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 31).

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Average visibility in December
Newtonville, NJ

Average visibility in December - Newtonville, NJ
  • Average visibility in December: 6mi

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

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