December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

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 in Cumberland, Maryland finds winter in its full glory. An interesting trait of this month is a sharp low temperature of 27.9°F (-2.3°C) along with recurrent snowfall of 1.81" (46mm). Predominant features of this winter month are the chilly winds, notoriously low temperatures, and short daylight hours. The persistent cover of clouds over Cumberland lends an enduring gray mood throughout December. Also, the recurrent snowfall turns the city into a winter wonderland, ending the year on a white note.

Temperature

Start of December brings a shift in the average high-temperature, falling from November's chilly 49.1°F (9.5°C) to a wintry 40.1°F (4.5°C). In the month of December, Cumberland records a consistent average low-temperature of 27.9°F (-2.3°C).

Humidity

The average relative humidity in December is 80%.

Rainfall

In Cumberland, in December, it is raining for 13.7 days, with typically 1.93" (49mm) of accumulated precipitation. In Cumberland, during the entire year, the rain falls for 168 days and collects up to 23.15" (588mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:01 pm EST.

Sunshine

In December, the average sunshine 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. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 2 in December translates into these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

During December, Cumberland experiences an average high-temperature of 40.1°F (4.5°C) and a low-temperature of 27.9°F (-2.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 80%.

How much does it rain in Cumberland in December?

In Cumberland, during December, the rain falls for 13.7 days and regularly aggregates up to 1.93" (49mm) of precipitation.

How many days does it snow in December?

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

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Cumberland have in December?

In Cumberland, the average day length in December is 9h and 25min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:01 pm EST.

How many hours of sunshine does Cumberland have in December?

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

When is the lowest UV index?

The months with the lowest UV index are January through March, 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 value of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

49.1°F 9.5°C

40.1°F 4.5°C

34.3°F 1.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7mph 11.3km/h

7.6mph 12.2km/h

8.5mph 13.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.8

13.8

12.1

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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").

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).

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").

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).

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

Average daylight in December: 9h and 2min

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 24min).

Average sunshine in December: 4h and 5min

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).

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).

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).

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).

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).

December weather forecast
Cumberland, MD

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