December weather forecast
Charleston, WV

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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

December in Charleston, West Virginia, sees the onset of wintry conditions with colder temperatures, substantial snowfall, and shorter daylight hours. With an average high temperature of 43.7°F (6.5°C) and an average low of 32.4°F (0.2°C), the cooling trend from November continues. Snowfall reaches a significant 4.53" (115mm), contributing to the festive wintry atmosphere. Despite the reduced daylight hours and colder temperatures, residents can still expect a fair amount of sunshine. Thus, December wraps up the year in a cold, yet bright fashion.

Temperature

Charleston in December undergoes a mild reduction in the average high-temperature, shifting from November's fresh 52.7°F (11.5°C) to a chilly 43.7°F (6.5°C). In December, Charleston's temperature tends to fall to an average low of 32.4°F (0.2°C) during the night.

Humidity

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

Rainfall

In Charleston, in December, during 13.4 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, 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 Charleston, West Virginia, in December, during 9.2 snowfall days, 4.53" (115mm) of snow is typically accumulated. Throughout the year, in Charleston, there are 46.8 snowfall days, and 22.01" (559mm) of snow is accumulated.

Daylight

The month with the shortest days in Charleston is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:16 pm EST.

Sunshine

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

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

Is it cold in Charleston during December?

December temperatures in Charleston vary between a high-temperature of 43.7°F (6.5°C) and a low-temperature of 32.4°F (0.2°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August 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 many days does it rain in December in Charleston?

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

How many days does it snow in December in Charleston?

In Charleston, West Virginia, during December, snow falls for 9.2 days and regularly aggregates up to 4.53" (115mm) of snow.

What is the month with the shortest days in Charleston?

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

What is the average length of the day in December in Charleston?

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

What time are sunrise and sunset in December in Charleston?

On the first day of December in Charleston, West Virginia, sunrise is at 7:25 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:16 pm EST.

How many hours of sunshine does Charleston have in December?

In December, the average sunshine duration in Charleston, West Virginia, 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.

What is the UV index intensity in December in Charleston?

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

Average temperature in December - Charleston, WV
  • 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, WV

Average pressure in December - Charleston, WV
  • 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, WV

Average wind speed in December - Charleston, WV
  • 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, WV

Average humidity in December - Charleston, WV
  • 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, WV

Average rainfall in December - Charleston, WV
  • 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, WV

Average rainfall days in December - Charleston, WV
  • 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, WV

Average snowfall in December - Charleston, WV
  • 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, WV

Average snowfall days in December - Charleston, WV
  • 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, WV

Average daylight in December / Average sunshine in December - Charleston, WV
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 4h and 1min

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, WV

Average sunshine days in December - Charleston, WV
  • 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, WV

Average UV index in December - Charleston, WV
  • 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, WV

Average cloud cover in December - Charleston, WV
  • 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, WV

Average visibility in December - Charleston, WV
  • 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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Charleston, West Virginia, USA

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