December weather forecast
Marlton, MD

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Weather in December

December, the first month of the winter in Marlton, is also a frosty month, with an average temperature ranging between max 45.7°F (7.6°C) and min 34.7°F (1.5°C).

Temperature

December brings a minor shift in the average high-temperature, adjusting from a cool 54.5°F (12.5°C) in November to a chilly 45.7°F (7.6°C). Throughout December, the temperature falls to an average low of 34.7°F (1.5°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Marlton, in December, it is raining for 11.1 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 164.8 rainfall days, and 32.87" (835mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Marlton, Maryland, during December, snow falls for 2.5 days and regularly aggregates up to 1.06" (27mm) of snow. Throughout the year, in Marlton, Maryland, there are 15.1 snowfall days, and 8.5" (216mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:55 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Frequently asked questions

What are the temperatures in December?

December temperatures vary between a high-temperature of 45.7°F (7.6°C) and a low-temperature of 34.7°F (1.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is evaluated at 93.2°F (34°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How many days does it rain in December?

In Marlton, during December, the rain falls for 11.1 days and regularly aggregates up to 2.68" (68mm) of precipitation.

How much does it snow in December?

In December, in Marlton, it is snowing for 2.5 days. Throughout December, 1.06" (27mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

What is the average length of the day in December?

In Marlton, the average day length in December is 9h and 31min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:55 pm EST.

How many hours of sunshine does Marlton have in December?

In Marlton, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from 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
Marlton, MD

Average temperature in December - Marlton, MD
  • Average high temperature in December: 45.7°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

Average pressure in December
Marlton, MD

Average pressure in December - Marlton, MD
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Marlton, MD

Average wind speed in December - Marlton, MD
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).

Average humidity in December
Marlton, MD

Average humidity in December - Marlton, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).

Average rainfall in December
Marlton, MD

Average rainfall in December - Marlton, MD
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in December
Marlton, MD

Average rainfall days in December - Marlton, MD
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in December
Marlton, MD

Average snowfall in December - Marlton, MD
  • Average snowfall in December: 1.06"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Marlton, MD

Average snowfall days in December - Marlton, MD
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Marlton, MD

Average daylight in December / Average sunshine in December - Marlton, MD
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in December
Marlton, MD

Average sunshine days in December - Marlton, MD
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
Marlton, MD

Average UV index in December - Marlton, MD
  • 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, November and December (UV index 2).

Average cloud cover in December
Marlton, MD

Average cloud cover in December - Marlton, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in December
Marlton, MD

Average visibility in December - Marlton, MD
  • 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).

Marlton, Maryland, USA

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