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 arrival of December suggests a slight decrease in the average high-temperature, moving from a fresh 54.5°F (12.5°C) in November to a chilly 45.7°F (7.6°C). Bull Run experiences a mean low-temperature of 32.4°F (0.2°C) during December.Humidity
December is the most humid month in Bull Run, Virginia, with an average relative humidity of 78%.Rainfall
In Bull Run, in December, it is raining for 10.3 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 157.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Bull Run. In Bull Run, during December, snow falls for 2.5 days and regularly aggregates up to 1.61" (41mm) of snow. Throughout the year, there are 15.8 snowfall days, and 11.5" (292mm) of snow is accumulated.Daylight
December has the shortest days of the year in Bull Run, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:58 pm EST.
Sunshine
January, February and December, with an average of 5.2h of sunshine, are months with the least 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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Bull Run?
What is the most humid month in Bull Run?
What is the average humidity in December in Bull Run?
How much does it rain in Bull Run in December?
How many days does it snow in December in Bull Run?
What is the month with the shortest days in Bull Run?
What is the average length of the day in December in Bull Run?
When are sunrise and sunset in December in Bull Run?
What are the months with the least sunshine in Bull Run?
How long on average sun shines in December in Bull Run?
What is the month with the lowest UV index in Bull Run?
What is the UV index reading in December in Bull Run?
Average temperature in December
Bull Run, VA
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in December
Bull Run, VA
- 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
Bull Run, VA
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Bull Run, VA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Bull Run, VA
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Bull Run, VA
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in December
Bull Run, VA
- Average snowfall in December: 1.61"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bull Run, VA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Bull Run, VA
- 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: 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 12min).
Average sunshine days in December
Bull Run, VA
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Bull Run, VA
- 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
Bull Run, VA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Bull Run, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are May, September, October and December (5mi).
Bull Run, Virginia, USA
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