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
The start of December comes with a small reduction in the average high-temperature, subtly receding from a fresh 52.2°F (11.2°C) in November to a frosty 43.3°F (6.3°C). Charles Town anticipates an average minimum temperature of 30.7°F (-0.7°C) in the month of December.Humidity
May, October and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In December, the rain falls for 10.8 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Charles Town, during the entire year, the rain falls for 162.1 days and collects up to 30.59" (777mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Charles Town, during December, snow falls for 4.3 days and regularly aggregates up to 2.8" (71mm) of snow. Throughout the year, there are 23.9 snowfall days, and 15.55" (395mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:58 pm EST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What are the most humid months?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Charles Town?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Charles Town, WV
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in December
Charles Town, WV
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Charles Town, WV
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Charles Town, WV
- Average humidity in December: 78%
The months with the highest relative humidity are May, October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in December
Charles Town, WV
- Average rainfall in December: 2.52"
The wettest months (with the highest rainfall) are May, July and August (3.15").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Charles Town, WV
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Charles Town, WV
- Average snowfall in December: 2.8"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Charles Town, WV
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Charles Town, WV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Charles Town, WV
- Average sunshine days in December: 17 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in December
Charles Town, 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, November and December (UV index 2).
Average cloud cover in December
Charles Town, WV
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Charles Town, WV
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, May, September and October (5mi).
Charles Town, West Virginia, USA
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