December weather forecast and climate
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
The first month of the winter, December, is also a frosty month in Charleston, West Virginia, with average temperature ranging between min 32.4°F (0.2°C) and max 43.7°F (6.5°C).

Temperature

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

Humidity

The average relative humidity in Charleston 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

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

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year.

Sunshine

In December, the average sunshine 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 reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Charleston?

In December, in Charleston, West Virginia, the average high-temperature is 43.7°F (6.5°C), and the average low-temperature is 32.4°F (0.2°C).

What is the average humidity in December in Charleston?

In Charleston, the average relative humidity in December 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 much does it snow in Charleston in December?

In Charleston, in December, during 9.2 snowfall days, 4.53" (115mm) of snow is typically 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 9.5h of daylight.

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

In December, the average length of the day is 9.5h.

How long on average sun shines in December in Charleston?

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

What is the month with the lowest UV index in Charleston?

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 low health threat from unprotected exposure to the UV radiation.
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).

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

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

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).

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

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

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").

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).

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

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

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).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Charleston, West VA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 4.1h

The month with the most sunshine is August (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 3.7h).

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

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).

Average UV index in December - Charleston, West VA
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

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).

Average visibility in December - Charleston, West VA
  • Average visibility in December: 5mi

Months with the highest visibility are April and November (6mi).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).