December weather forecast
Rolling Ridge, MD

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Weather in December

December, the first month of the winter in Rolling Ridge, is still a chilly month, with an average temperature fluctuating between 43.7°F (6.5°C) and 32.4°F (0.2°C).

Temperature

The arrival of December corresponds with a shift in temperature, down from a fresh 52.7°F (11.5°C) in November to a frosty 43.7°F (6.5°C). Throughout December, Rolling Ridge registers a consistent average low-temperature of 32.4°F (0.2°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In December, the rain falls for 11.3 days. Throughout December, 2.83" (72mm) of precipitation is accumulated. In Rolling Ridge, during the entire year, the rain falls for 167.9 days and collects up to 34.69" (881mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Rolling Ridge, in December, during 3.9 snowfall days, 1.69" (43mm) of snow is typically accumulated. Throughout the year, there are 21 snowfall days, and 10.91" (277mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:53 pm EST.

Sunshine

January, February and December, with an average of 5h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

In Rolling Ridge, in December, the average high-temperature is 43.7°F (6.5°C), and the average low-temperature is 32.4°F (0.2°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 89.6°F (32°C).

What is the average humidity in December?

In Rolling Ridge, the average relative humidity in December is 77%.

How much does it rain in December?

In Rolling Ridge, Maryland, in December, during 11.3 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

How much does it snow in December?

In December, it is snowing for 3.9 days. Throughout December, 1.69" (43mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 27min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:53 pm EST.

What are the months with the least sunshine?

January, February and December, with an average of 5h of sunshine, are months with the least sunshine.

How many hours of sunshine does Rolling Ridge have in December?

In December, the average sunshine duration is 5h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat 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
Rolling Ridge, MD

Average temperature in December - Rolling Ridge, MD
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 32.4°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in December
Rolling Ridge, MD

Average pressure in December - Rolling Ridge, 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
Rolling Ridge, MD

Average wind speed in December - Rolling Ridge, MD
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Rolling Ridge, MD

Average humidity in December - Rolling Ridge, MD
  • Average humidity in December: 77%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are April and July (73%).

Average rainfall in December
Rolling Ridge, MD

Average rainfall in December - Rolling Ridge, MD
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is August (4.37").
The driest months (with the least rainfall) are January and February (2.28").

Average rainfall days in December
Rolling Ridge, MD

Average rainfall days in December - Rolling Ridge, MD
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in December
Rolling Ridge, MD

Average snowfall in December - Rolling Ridge, MD
  • Average snowfall in December: 1.69"

The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Rolling Ridge, MD

Average snowfall days in December - Rolling Ridge, MD
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is February (6.1 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
Rolling Ridge, MD

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).

Average sunshine days in December
Rolling Ridge, MD

Average sunshine days in December - Rolling Ridge, MD
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in December
Rolling Ridge, MD

Average UV index in December - Rolling Ridge, 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, February, November and December (UV index 2).

Average cloud cover in December
Rolling Ridge, MD

Average cloud cover in December - Rolling Ridge, MD
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Rolling Ridge, MD

Average visibility in December - Rolling Ridge, MD
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Rolling Ridge, Maryland, USA

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