Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December brings a minor decrease, with the average high-temperature reducing from a fresh 52.7°F (11.5°C) in November to a chilly 43.7°F (6.5°C). Charleston experiences a steady low-temperature of 32.4°F (0.2°C) throughout December.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. Throughout the year, there are 180.4 rainfall days, and 34.06" (865mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Charleston, in December, snow falls for 9.2 days, with typically accumulated 4.53" (115mm) of snow. In Charleston, West Virginia, 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 30min of daylight, December has the shortest days of the year.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 Charleston, West Virginia, the average sunshine in December 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 minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the UV index of 2 transforms into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. It's recommended to limit sun exposure when its radiation is at its peak during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Charleston have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Charleston, West Virginia, USA
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