December weather forecast
Newark, NJ

A mirrored reflection of Newark City in New Jersey, on the Passaic River
A mirrored reflection of Newark City in New Jersey, on the Passaic River

Weather in December

The first month of the winter, December, is still a cold month in Newark, New Jersey, with an average temperature varying between 42.1°F (5.6°C) and 32.9°F (0.5°C).

Temperature

In Newark, the average high-temperature in December decreases from a fresh 51.3°F (10.7°C) in November to a wintry 42.1°F (5.6°C). In Newark, New Jersey, in December, the average low-temperature is 32.9°F (0.5°C).

Humidity

February, May, October and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

The months with the most rainfall in Newark are July and December, with an average 3.19" (81mm) of precipitation.

Snowfall

Months with snowfall in Newark are January through April, November and December. In Newark, snow falls for 3.6 days, with typically accumulated 1.38" (35mm) of snow. Throughout the year, in Newark, there are 20.9 snowfall days, and 8.94" (227mm) of snow is accumulated.

Ocean temperature

In Newark, the average seawater temperature in December is 47.1°F (8.4°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

The month with the shortest days is December, with an average of 9h and 19min of daylight.
On the first day of December, sunrise is at 7:01 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:38 pm EST.

Sunshine

In Newark, New Jersey, the average sunshine in December 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 health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
[Resources]

FAQ

What is the temperature in December in Newark?

The average high-temperature, in December, is 42.1°F (5.6°C), while the average low-temperature is 32.9°F (0.5°C). in August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 86°F (30°C).

What are the most humid months in Newark?

February, May, October and December, with an average relative humidity of 76%, are most humid months.

What is the average humidity in December in Newark?

The average relative humidity in December is 76%.

What is the wettest month in Newark?

The months with the most rainfall in Newark are July and December, with an average 3.19" (81mm) of precipitation.

How much does it rain in Newark in December?

In Newark, during December, the rain falls for 11.9 days and regularly aggregates up to 3.19" (81mm) of precipitation.

How many days does it snow in December in Newark?

In Newark, New Jersey, in December, during 3.6 snowfall days, 1.38" (35mm) of snow is typically accumulated.

How cold is the water in December in Newark?

In Newark, in December, the average water temperature is 47.1°F (8.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Newark?

The month with the shortest days in Newark is December, with an average of 9h and 19min of daylight.

What is the average length of the day in December in Newark?

In December, the average day length is 9h and 19min.

When are sunrise and sunset in December in Newark?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:30 pm. On the last day of the month, in Newark, New Jersey, sunrise is at 7:20 am and sunset at 4:38 pm EST.

How many hours of sunshine does Newark have in December?

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

When is the lowest UV index in Newark?

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

What is the UV index intensity in December in Newark?

The average daily maximum UV index in December in Newark is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Newark, NJ

Average temperature in December - Newark, NJ
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

[Resources]

Average pressure in December
Newark, NJ

Average pressure in December - Newark, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in December
Newark, NJ

Average wind speed in December - Newark, NJ
  • Average wind speed in December: 9.2mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

[Resources]

Average humidity in December
Newark, NJ

Average humidity in December - Newark, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are February, May, October and December (76%).
The months with the lowest relative humidity are April and August (72%).

[Resources]

Average rainfall in December
Newark, NJ

Average rainfall in December - Newark, NJ
  • Average rainfall in December: 3.19"

The wettest months (with the highest rainfall) are July and December (3.19").
The driest month (with the least rainfall) is September (1.65").

[Resources]

Average rainfall days in December
Newark, NJ

Average rainfall days in December - Newark, NJ
  • Average rainfall days in December: 11.9 days

The months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is November (9.5 days).

[Resources]

Average snowfall in December
Newark, NJ

Average snowfall in December - Newark, NJ
  • Average snowfall in December: 1.38"

The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Newark, NJ

Average snowfall days in December - Newark, NJ
  • Average snowfall days in December: 3.6 days

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in December
Newark, NJ

Average sea temperature in December - Newark, NJ
  • Average sea temperature in December: 47.2°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

[Resources]

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

Average daylight in December / Average sunshine in December - Newark, NJ
  • Average daylight in December: 9h and 19min

The month with the longest days is June (Average daylight: 15h and 3min).
The month with the shortest days is December (Average daylight: 9h and 19min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

[Resources]

Average sunshine days in December
Newark, NJ

Average sunshine days in December - Newark, NJ
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).

[Resources]

Average UV index in December
Newark, NJ

Average UV index in December - Newark, NJ
  • 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).

[Resources]

Average cloud cover in December
Newark, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).

[Resources]

Average visibility in December
Newark, NJ

Average visibility in December - Newark, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location