December weather forecast
West Orange, NJ

Weather in December

The first month of the winter, December, is still a cold month in West Orange, New Jersey, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 41.7°F (5.4°C).

Temperature

In West Orange, the average high-temperature in December decreases from a cool 50.7°F (10.4°C) in November to a wintry 41.7°F (5.4°C). In December, in West Orange, the average low-temperature is 31.1°F (-0.5°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 78%.

Rainfall

In West Orange, New Jersey, it is raining for 9.5 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, in West Orange, there are 127.3 rainfall days, and 12.68" (322mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in West Orange, New Jersey. In West Orange, New Jersey, during December, snow falls for 3.3 days and regularly aggregates up to 0.55" (14mm) of snow. In West Orange, during the entire year, snow falls for 19 days and aggregates up to 3.7" (94mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 19min of daylight.
On the first day of December in West Orange, 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 December, the average sunshine 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 in West Orange. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in West Orange?

The average high-temperature, in December, is 41.7°F (5.4°C), while the average low-temperature is 31.1°F (-0.5°C). in August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 86°F (30°C).

What is the most humid month in West Orange?

The months with the highest humidity are February and December, with an average relative humidity of 78%.

What is the average humidity in December in West Orange?

In West Orange, New Jersey, the average relative humidity in December is 78%.

How many days does it rain in December in West Orange?

In West Orange, in December, it is raining for 9.5 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in West Orange in December?

In West Orange, New Jersey, in December, snow falls for 3.3 days, with typically accumulated 0.55" (14mm) of snow.

What is the month with the shortest days in West Orange?

With an average of 9h and 19min of daylight, December has the shortest days of the year in West Orange, New Jersey.

How many hours of daylight does West Orange have in December?

The average day length in December in West Orange, New Jersey, is 9h and 19min.

When is the sunrise / sunset in December in West Orange?

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.

How long on average sun shines in December in West Orange?

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

What is the month with the lowest UV index in West Orange?

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

What is the UV index reading in December in West Orange?

In December, the average daily maximum UV index in West Orange, New Jersey, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
West Orange, NJ

Average temperature in December - West Orange, NJ
  • Average high temperature in December: 41.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

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Average pressure in December
West Orange, NJ

Average pressure in December - West Orange, 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).

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Average wind speed in December
West Orange, NJ

Average wind speed in December - West Orange, NJ
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in December
West Orange, NJ

Average humidity in December - West Orange, NJ
  • Average humidity in December: 78%

The months with the highest relative humidity are February and December (78%).
The months with the lowest relative humidity are April and August (72%).

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Average rainfall in December
West Orange, NJ

Average rainfall in December - West Orange, NJ
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in December
West Orange, NJ

Average rainfall days in December - West Orange, NJ
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in December
West Orange, NJ

Average snowfall in December - West Orange, NJ
  • Average snowfall in December: 0.55"

The month with the highest snowfall is March (1.22").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
West Orange, NJ

Average snowfall days in December - West Orange, NJ
  • Average snowfall days in December: 3.3 days

The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
West Orange, NJ

Average daylight in December / Average sunshine in December - West Orange, 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 42min).

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Average sunshine days in December
West Orange, NJ

Average sunshine days in December - West Orange, NJ
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (12.5 days).

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Average UV index in December
West Orange, NJ

Average UV index in December - West Orange, 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).

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Average cloud cover in December
West Orange, NJ

Average cloud cover in December - West Orange, NJ
  • Average cloud cover in December: 47

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
West Orange, NJ

Average visibility in December - West Orange, 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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