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
A shift in the average high-temperature occurs in December, reducing from a fresh 52°F (11.1°C) in November to a chilly 43°F (6.1°C). December nights are marked by an average temperature drop to a freezing cold 31.1°F (-0.5°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Copen, in December, during 13.7 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Copen, during the entire year, the rain falls for 189.9 days and collects up to 38.19" (970mm) of precipitation.Snowfall
Months with snowfall in Copen are January through April, October through December. In December, it is snowing for 10.5 days. Throughout December, 3.98" (101mm) of snow is accumulated. Throughout the year, there are 51.3 snowfall days, and 21.93" (557mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:11 pm EST.
Sunshine
The average sunshine in December is 3.9h.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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | 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 many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Copen have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Copen have in December?
What are the months with the lowest UV index in Copen?
What is the UV index reading in December?
Average temperature in December
Copen, WV
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Copen, WV
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Copen, WV
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are January and February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Copen, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).
Average rainfall in December
Copen, WV
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Copen, WV
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is November (11.7 days).
Average snowfall in December
Copen, WV
- Average snowfall in December: 3.98"
The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Copen, WV
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Copen, 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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Copen, WV
- Average sunshine days in December: 10 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is January (7.9 days).
Average UV index in December
Copen, WV
- Average UV index in December: 2
The months with the highest UV index are 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
Copen, WV
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Copen, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is January (4mi).
Copen, West Virginia, USA
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