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
During the shift to December, Appalachia records a mild decrease in average high-temperature, moving from a fresh 53.4°F (11.9°C) in November to a chilly 45.3°F (7.4°C). An average low-temperature of 32.4°F (0.2°C) is noted during the nights in December in Appalachia, Virginia.Humidity
The average relative humidity in December is 80%.Rainfall
In Appalachia, in December, during 14.3 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, there are 200.2 rainfall days, and 40.87" (1038mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Appalachia, in December, during 8.1 snowfall days, 3.98" (101mm) of snow is typically accumulated. Throughout the year, there are 38.8 snowfall days, and 18.86" (479mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:26 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:24 pm EST.
Sunshine
In Appalachia, the average sunshine in December is 4.8h.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
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?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December in Appalachia?
Average temperature in December
Appalachia, VA
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in December
Appalachia, VA
- 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 (29.99"Hg).
Average wind speed in December
Appalachia, VA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Appalachia, VA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Appalachia, VA
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in December
Appalachia, VA
- Average rainfall days in December: 14.3 days
The months with the highest number of rainy days are May and July (20.8 days).
The month with the least rainy days is November (12.5 days).
Average snowfall in December
Appalachia, VA
- Average snowfall in December: 3.98"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Appalachia, VA
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Appalachia, VA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Appalachia, VA
- Average sunshine days in December: 11.3 days
The month with the most sunshine days is November (14.9 days).
The months with the least sunshine days are May and July (8.3 days).
Average UV index in December
Appalachia, VA
- 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
Appalachia, VA
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Appalachia, VA
- 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).
Appalachia, Virginia, USA
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