December weather forecast
Clarksville, MD

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Weather in December

December, the first month of the winter in Clarksville, is still a chilly month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 44.2°F (6.8°C).

Temperature

December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's fresh 53.1°F (11.7°C) to a chilly 44.2°F (6.8°C). Clarksville's nights in December experience an average temperature drop to an icy 32.9°F (0.5°C).

Humidity

In Clarksville, the average relative humidity in December is 76%.

Rainfall

In Clarksville, during December, the rain falls for 10.2 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Clarksville are January through March, November and December. In Clarksville, in December, during 2.9 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Clarksville, during the entire year, snow falls for 15.9 days and aggregates up to 8.7" (221mm) of snow.

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 4:45 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:55 pm EST.

Sunshine

In Clarksville, Maryland, the average sunshine in December is 5.2h.

UV index

The months with the lowest UV index in Clarksville are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during December translates into these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is it in Clarksville in December?

During December, Clarksville experiences an average high-temperature of 44.2°F (6.8°C) and a low-temperature of 32.9°F (0.5°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 91.4°F (33°C).

What is the average humidity in December in Clarksville?

In December, the average relative humidity in Clarksville, Maryland, is 76%.

How many days does it rain in December in Clarksville?

In Clarksville, Maryland, during December, the rain falls for 10.2 days and regularly aggregates up to 2.24" (57mm) of precipitation.

How much does it snow in Clarksville in December?

In Clarksville, during December, snow falls for 2.9 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in Clarksville?

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

How many hours of daylight does Clarksville have in December?

The average day length in December is 9h and 28min.

When are sunrise and sunset in December in Clarksville?

On the first day of December in Clarksville, Maryland, sunrise is at 7:08 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:55 pm EST.

How long on average sun shines in December in Clarksville?

The average sunshine duration in December in Clarksville is 5.2h.

What are the months with the lowest UV index in Clarksville?

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

What is the UV index intensity in December in Clarksville?

In Clarksville, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Clarksville, MD

Average temperature in December - Clarksville, MD
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in December
Clarksville, MD

Average pressure in December - Clarksville, 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).

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Average wind speed in December
Clarksville, MD

Average wind speed in December - Clarksville, MD
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Clarksville, MD

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

The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in December
Clarksville, MD

Average rainfall in December - Clarksville, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in December
Clarksville, MD

Average rainfall days in December - Clarksville, MD
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in December
Clarksville, MD

Average snowfall in December - Clarksville, MD
  • Average snowfall in December: 1.14"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Clarksville, MD

Average snowfall days in December - Clarksville, MD
  • Average snowfall days in December: 2.9 days

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

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

Average daylight in December / Average sunshine in December - Clarksville, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

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Average sunshine days in December
Clarksville, MD

Average sunshine days in December - Clarksville, MD
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Clarksville, MD

Average UV index in December - Clarksville, 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).

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Average cloud cover in December
Clarksville, MD

Average cloud cover in December - Clarksville, MD
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in December
Clarksville, MD

Average visibility in December - Clarksville, 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).

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Clarksville, Maryland, USA

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