December weather forecast
Marlboro Hills, MD

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Weather in December

December, the first month of the winter in Marlboro Hills, is also a frosty month, with an average temperature ranging between max 46.4°F (8°C) and min 36.5°F (2.5°C).

Temperature

December implies a soft temperature shift, with average high-temperatures reducing from November's cool 54.7°F (12.6°C) to a frosty 46.4°F (8°C). December brings an average low-temperature of 36.5°F (2.5°C) to Marlboro Hills.

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Marlboro Hills, in December, it is raining for 8.4 days, with typically 0.91" (23mm) of accumulated precipitation. In Marlboro Hills, during the entire year, the rain falls for 132.3 days and collects up to 15.83" (402mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Marlboro Hills, during December, snow falls for 1.6 days and regularly aggregates up to 0.28" (7mm) of snow. In Marlboro Hills, during the entire year, snow falls for 9.4 days and aggregates up to 1.97" (50mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm EST.

Sunshine

In Marlboro Hills, the average sunshine in December is 5.2h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 2 during December translates into the following guidance:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

December temperatures vary between a high-temperature of 46.4°F (8°C) and a low-temperature of 36.5°F (2.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 75%.

How much does it rain in December?

In Marlboro Hills, in December, during 8.4 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

How much does it snow in December?

In December, it is snowing for 1.6 days. Throughout December, 0.28" (7mm) 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?

The average day length in December is 9h and 31min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm EST.

How many hours of sunshine does Marlboro Hills have in December?

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

What are the months with the lowest UV index?

January 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 Marlboro Hills, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes 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
Marlboro Hills, MD

Average temperature in December - Marlboro Hills, MD
  • Average high temperature in December: 46.4°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in December
Marlboro Hills, MD

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Marlboro Hills, MD

Average wind speed in December - Marlboro Hills, MD
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are January and March (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in December
Marlboro Hills, MD

Average humidity in December - Marlboro Hills, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in December
Marlboro Hills, MD

Average rainfall in December - Marlboro Hills, MD
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is August (2.4").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in December
Marlboro Hills, MD

Average rainfall days in December - Marlboro Hills, MD
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (6.6 days).

Average snowfall in December
Marlboro Hills, MD

Average snowfall in December - Marlboro Hills, MD
  • Average snowfall in December: 0.28"

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Marlboro Hills, MD

Average snowfall days in December - Marlboro Hills, MD
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (2.9 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
Marlboro Hills, MD

Average daylight in December / Average sunshine in December - Marlboro Hills, 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: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in December
Marlboro Hills, MD

Average sunshine days in December - Marlboro Hills, MD
  • Average sunshine days in December: 19.9 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.7 days).

Average UV index in December
Marlboro Hills, MD

Average UV index in December - Marlboro Hills, 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 and December (UV index 2).

Average cloud cover in December
Marlboro Hills, MD

Average cloud cover in December - Marlboro Hills, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in December
Marlboro Hills, MD

Average visibility in December - Marlboro Hills, 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).

Marlboro Hills, Maryland, USA

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