December weather forecast
Mount Laurel, NJ

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Weather in December

December, the first month of the winter in Mount Laurel, is still a chilly month, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 32.7°F (0.4°C).

Temperature

Mount Laurel's progression into December involves a gentle drop in the average high-temperature, from a fresh 53.1°F (11.7°C) in November to a chilly 44.2°F (6.8°C). Mount Laurel, during the month of December, experiences an average low-temperature of 32.7°F (0.4°C).

Humidity

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

Rainfall

In December, the rain falls for 8.1 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Mount Laurel, there are 120.1 rainfall days, and 11.81" (300mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Mount Laurel. In December, it is snowing for 2.3 days. Throughout December, 0.31" (8mm) of snow is accumulated. In Mount Laurel, during the entire year, snow falls for 12.9 days and aggregates up to 3.23" (82mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:44 pm EST.

Sunshine

The average sunshine in December in Mount Laurel is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. It's recommended to limit sun exposure when its radiation is at its peak during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is it in Mount Laurel in December?

Mount Laurel in December has an average high-temperature of 44.2°F (6.8°C) and an average low-temperature of 32.7°F (0.4°C). 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, in August is estimated at 91.4°F (33°C).

What is the average humidity in December in Mount Laurel?

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

How much does it rain in Mount Laurel in December?

In Mount Laurel, during December, the rain falls for 8.1 days and regularly aggregates up to 1.18" (30mm) of precipitation.

How much does it snow in Mount Laurel in December?

In Mount Laurel, in December, during 2.3 snowfall days, 0.31" (8mm) of snow is typically accumulated.

What is the month with the shortest days in Mount Laurel?

The month with the shortest days in Mount Laurel, New Jersey, is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Mount Laurel have in December?

The average day length in December in Mount Laurel is 9h and 23min.

When are sunrise and sunset in December in Mount Laurel?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of the month, in Mount Laurel, sunrise is at 7:21 am and sunset at 4:44 pm EST.

How long on average sun shines in December in Mount Laurel?

In Mount Laurel, the average sunshine duration in December is 5.1h.

When is the lowest UV index in Mount Laurel?

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

How high is the UV index in December in Mount Laurel?

The average daily maximum UV index in December in Mount Laurel is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Mount Laurel, NJ

Average temperature in December - Mount Laurel, NJ
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 32.7°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 (25.5°F).

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Average pressure in December
Mount Laurel, NJ

Average pressure in December - Mount Laurel, NJ
  • Average pressure in December: 30.09"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
Mount Laurel, NJ

Average wind speed in December - Mount Laurel, NJ
  • Average wind speed in December: 7.5mph

The windiest months (with the highest average wind speed) are March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in December
Mount Laurel, NJ

Average humidity in December - Mount Laurel, NJ
  • Average humidity in December: 77%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Mount Laurel, NJ

Average rainfall in December - Mount Laurel, NJ
  • Average rainfall in December: 1.18"

The wettest months (with the highest rainfall) are July and August (1.42").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in December
Mount Laurel, NJ

Average rainfall days in December - Mount Laurel, NJ
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in December
Mount Laurel, NJ

Average snowfall in December - Mount Laurel, NJ
  • Average snowfall in December: 0.31"

The months with the highest snowfall are February and March (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Mount Laurel, NJ

Average snowfall days in December - Mount Laurel, NJ
  • Average snowfall days in December: 2.3 days

The month with the highest number of snowfall days is January (3.9 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
Mount Laurel, NJ

Average daylight in December / Average sunshine in December - Mount Laurel, NJ
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in December
Mount Laurel, NJ

Average sunshine days in December - Mount Laurel, NJ
  • Average sunshine days in December: 20.2 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13 days).

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Average UV index in December
Mount Laurel, NJ

Average UV index in December - Mount Laurel, 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
Mount Laurel, NJ

Average cloud cover in December - Mount Laurel, NJ
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Mount Laurel, NJ

Average visibility in December - Mount Laurel, 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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Mount Laurel, New Jersey, USA

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