December weather forecastBroad Run, VA
December
Weather in December
The first month of the winter, December, is still a chilly month in Broad Run, Virginia, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 32°F (0°C).Temperature
December heralds a minor drop in average high-temperature, sliding from November's cool 54°F (12.2°C) to a chilly 45.5°F (7.5°C). An average nighttime temperature of 32°F (0°C) is noted during the month of December.Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In Broad Run, during December, the rain falls for 10.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 160.5 rainfall days, and 29.92" (760mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Broad Run, during December, snow falls for 3.3 days and regularly aggregates up to 2.13" (54mm) of snow. In Broad Run, during the entire year, snow falls for 20.3 days and aggregates up to 13.07" (332mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:59 pm EST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Broad Run. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Enhance your sun protection with tightly woven, yet airy clothing. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Broad Run, VA
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (40.3°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in December
Broad 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
Broad Run, VA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are March and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Broad 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
Broad Run, VA
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Broad Run, VA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Broad Run, VA
- Average snowfall in December: 2.13"
The month with the highest snowfall is January (3.74").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Broad Run, VA
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Broad Run, VA
- Average daylight in December: 9h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Broad Run, VA
- Average sunshine days in December: 17 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in December
Broad 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
Broad Run, VA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Broad Run, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, June, July, August and November (6mi).
The months with the lowest visibility are February, May, September, October and December (5mi).
