December weather forecast
Charleston, West VA

The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water
The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water

Weather in December

The first month of the winter, December, is also a frosty month in Charleston, West Virginia, with an average temperature fluctuating between 32.4°F (0.2°C) and 43.7°F (6.5°C).

Temperature

In December, the average high-temperature drops from a fresh 52.7°F (11.5°C) in November to a chilly 43.7°F (6.5°C). In Charleston, West Virginia, in December, the average low-temperature is 32.4°F (0.2°C).

Humidity

In Charleston, the average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 13.4 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. In Charleston, during the entire year, the rain falls for 180.4 days and collects up to 34.06" (865mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Charleston, snow falls for 9.2 days, with typically accumulated 4.53" (115mm) of snow. In Charleston, during the entire year, snow falls for 46.8 days and aggregates up to 22.01" (559mm) of snow.

Daylight

With an average of 9h and 33min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:24 am and sunset at 5:06 pm. On the last day of December, in Charleston, sunrise is at 7:43 am and sunset at 5:15 pm EST.

Sunshine

The average sunshine in December in Charleston is 4.1h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. 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 Charleston?

In Charleston, West Virginia, the average relative humidity in December is 81%.

How much does it rain in Charleston in December?

In December, the rain falls for 13.4 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How much does it snow in Charleston in December?

In December, it is snowing for 9.2 days. Throughout December, 4.53" (115mm) of snow is accumulated.

What is the month with the shortest days in Charleston?

December has the shortest days of the year in Charleston, West Virginia, with an average of 9h and 33min of daylight.

How many hours of daylight does Charleston have in December?

In Charleston, the average day length in December is 9h and 33min.

What time are sunrise and sunset in December in Charleston?

On the first day of December in Charleston, sunrise is at 7:24 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:15 pm EST.

How long on average sun shines in December in Charleston?

The average sunshine duration in December is 4.1h.

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

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Charleston, West Virginia.

How high is the UV index in December in Charleston?

The average daily maximum UV index in December in Charleston, West Virginia, is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Charleston, West VA

Average temperature in December - Charleston, West VA
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 32.4°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

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Average pressure in December
Charleston, West VA

Average pressure in December - Charleston, West VA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in December
Charleston, West VA

Average wind speed in December - Charleston, West VA
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

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Average humidity in December
Charleston, West VA

Average humidity in December - Charleston, West VA
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are June, July, August and November (76%).

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Average rainfall in December
Charleston, West VA

Average rainfall in December - Charleston, West VA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Charleston, West VA

Average rainfall days in December - Charleston, West VA
  • Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is November (11 days).

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Average snowfall in December
Charleston, West VA

Average snowfall in December - Charleston, West VA
  • Average snowfall in December: 4.53"

The month with the highest snowfall is January (5.51").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Charleston, West VA

Average snowfall days in December - Charleston, West VA
  • Average snowfall days in December: 9.2 days

The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Charleston, West VA

Average daylight in December / Average sunshine in December - Charleston, West VA
  • Average daylight in December: 9h and 33min

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 33min).

  • Average sunshine in December: 4h and 6min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
Charleston, West VA

Average sunshine days in December - Charleston, West VA
  • Average sunshine days in December: 11.5 days

The months with the most sunshine days are October and November (16.5 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in December
Charleston, West VA

Average UV index in December - Charleston, West VA
  • 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 and December (UV index 2).

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Average cloud cover in December
Charleston, West VA

Average cloud cover in December - Charleston, West VA
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Charleston, West VA

Average visibility in December - Charleston, West VA
  • 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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