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 still a chilly month in Charleston, West Virginia, with temperature in the range of an average low of 32.4°F (0.2°C) and an average high of 43.7°F (6.5°C).

Temperature

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

Humidity

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

Rainfall

In Charleston, West Virginia, during December, the rain falls for 13.4 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, in Charleston, West Virginia, there are 180.4 rainfall days, and 34.06" (865mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, in Charleston, West Virginia, it is snowing for 9.2 days. Throughout December, 4.53" (115mm) of snow is accumulated. In Charleston, during the entire year, snow falls for 46.8 days and aggregates up to 22.01" (559mm) of snow.

Daylight

December has the shortest days of the year in Charleston, with an average of 9h and 33min of daylight.
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, sunrise is at 7:43 am and sunset at 5:15 pm EST.

Sunshine

In December, the average sunshine 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 of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 temperature in December in Charleston?

The average high-temperature, in December, is 43.7°F (6.5°C), while the average low-temperature is 32.4°F (0.2°C). in August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 93.2°F (34°C).

What is the average humidity in December in Charleston?

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

How much does it rain in Charleston in December?

In Charleston, West Virginia, in December, it is raining for 13.4 days, with typically 3.11" (79mm) of accumulated precipitation.

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?

The month with the shortest days in Charleston is December, with an average of 9h and 33min of daylight.

How many hours of daylight does Charleston have in December?

The average day length in December in Charleston, West Virginia, is 9h and 33min.

When is the sunrise / sunset in December in Charleston?

In December, on the first day of the month, 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 many hours of sunshine does Charleston have in December?

In December, the average sunshine duration in Charleston is 4.1h.

When is the lowest UV index in Charleston?

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

What is the UV index reading in December in Charleston?

In December, the average daily maximum UV index in Charleston, West Virginia, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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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