December weather forecast
Newtonville, NJ

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Weather in December

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

Temperature

Start of December brings a slight shift in the average high-temperature, dipping a bit from November's cool 53.8°F (12.1°C) to a chilly 45.3°F (7.4°C). The nighttime temperature in Newtonville dips to a wintry 34.2°F (1.2°C) on average during December.

Humidity

In December, the average relative humidity is 77%.

Rainfall

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

Snowfall

January through April, November and December are months with snowfall in Newtonville. In Newtonville, in December, during 2.3 snowfall days, 0.51" (13mm) of snow is typically accumulated. 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 is December, with an average of 9h and 24min of daylight.
On the first day of December in Newtonville, sunrise is at 7:01 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:45 pm EST.

Sunshine

In Newtonville, the average sunshine in December is 5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 2 in December translates into this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the temperature in December in Newtonville?

In December, the average high-temperature and low-temperature in Newtonville, New Jersey, are 45.3°F (7.4°C) and 34.2°F (1.2°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in December in Newtonville?

In December, the average relative humidity is 77%.

How many days does it rain in December in Newtonville?

In Newtonville, New Jersey, in December, it is raining for 9.2 days, with typically 1.5" (38mm) of accumulated precipitation.

How much does it snow in Newtonville in December?

In Newtonville, New Jersey, 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?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Newtonville have in December?

In Newtonville, New Jersey, the average day length in December is 9h and 26min.

When are sunrise and sunset in December in Newtonville?

On the first day of December in Newtonville, sunrise is at 7:01 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:45 pm EST.

How many hours of sunshine does Newtonville have in December?

The average sunshine duration in December in Newtonville is 5h.

What are the months 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.

What is the UV index intensity in December in Newtonville?

In December, the average daily maximum UV index in Newtonville is 2. A UV Index estimate of 2, and below, represents a low health threat 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
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"Hg

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

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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%

The 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").
The 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).
The 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: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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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

The months with the highest UV index are May, June, July and August (UV index 6).
The 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

The months with the most cloud cover are February and March (Cloud cover 48).
The 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

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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Newtonville, New Jersey, USA

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