December weather forecast
Cumberland, MD

The scenic area of the town of Cumberland, Maryland, and a view of bridges over the Potomac River and a far hilly landscape
The scenic area of the town of Cumberland, Maryland, and a view of bridges over the Potomac River and a far hilly landscape

Weather in December

December, the first month of the winter in Cumberland, is still a cold month, with an average temperature varying between 27.9°F (-2.3°C) and 40.1°F (4.5°C).

Temperature

In Cumberland, the average high-temperature in December drops from a chilly 49.1°F (9.5°C) in November to a wintry 40.1°F (4.5°C). In Cumberland, in December, the average low-temperature is 27.9°F (-2.3°C).

Humidity

In December, the average relative humidity is 80%.

Rainfall

In Cumberland, in December, during 13.7 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, in Cumberland, there are 168 rainfall days, and 23.15" (588mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Cumberland. In Cumberland, during December, snow falls for 7 days and regularly aggregates up to 1.81" (46mm) of snow. Throughout the year, in Cumberland, there are 36.4 snowfall days, and 13.19" (335mm) of snow is accumulated.

Daylight

With an average of 9h and 25min of daylight, December has the shortest days of the year in Cumberland.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:00 pm EST.

Sunshine

The average sunshine in December in Cumberland 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 Cumberland. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 average humidity in December in Cumberland?

In December, the average relative humidity in Cumberland, Maryland, is 80%.

How many days does it rain in December in Cumberland?

In December, the rain falls for 13.7 days. Throughout December, 1.93" (49mm) of precipitation is accumulated.

How many days does it snow in December in Cumberland?

In Cumberland, in December, during 7 snowfall days, 1.81" (46mm) of snow is typically accumulated.

What is the month with the shortest days in Cumberland?

The month with the shortest days in Cumberland is December, with an average of 9h and 25min of daylight.

How many hours of daylight does Cumberland have in December?

The average day length in December is 9h and 25min.

What time are sunrise and sunset in December in Cumberland?

On the first day of December, sunrise is at 7:16 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:00 pm EST.

How many hours of sunshine does Cumberland have in December?

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

When is the lowest UV index in Cumberland?

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

What is the UV index intensity in December in Cumberland?

In December, the average daily maximum UV index in Cumberland, Maryland, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Cumberland, MD

Average temperature in December - Cumberland, MD
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in December
Cumberland, MD

Average pressure in December - Cumberland, 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 (29.95"Hg).

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Average wind speed in December
Cumberland, MD

Average wind speed in December - Cumberland, MD
  • Average wind speed in December: 7mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in December
Cumberland, MD

Average humidity in December - Cumberland, MD
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
Cumberland, MD

Average rainfall in December - Cumberland, MD
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.46").

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Average rainfall days in December
Cumberland, MD

Average rainfall days in December - Cumberland, MD
  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.9 days).

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Average snowfall in December
Cumberland, MD

Average snowfall in December - Cumberland, MD
  • Average snowfall in December: 1.81"

The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Cumberland, MD

Average snowfall days in December - Cumberland, MD
  • Average snowfall days in December: 7 days

The month with the highest number of snowfall days is January (11.3 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
Cumberland, MD

Average daylight in December / Average sunshine in December - Cumberland, MD
  • Average daylight in December: 9h and 25min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in December
Cumberland, MD

Average sunshine days in December - Cumberland, MD
  • Average sunshine days in December: 13.8 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.9 days).

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Average UV index in December
Cumberland, MD

Average UV index in December - Cumberland, MD
  • Average UV index in December: 2

The month with the highest UV index is June (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
Cumberland, MD

Average cloud cover in December - Cumberland, MD
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Cumberland, MD

Average visibility in December - Cumberland, MD
  • Average visibility in December: 5mi

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

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