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
In Brightwood, the average high-temperature in December gently drops from a cool 54.1°F (12.3°C) in November to a frosty 46.4°F (8°C). Brightwood's average low-temperature during December nights is observed to be a subzero cold 31.8°F (-0.1°C).Humidity
October and December, with an average relative humidity of 77%, are the most humid months in Brightwood.Rainfall
In Brightwood, in December, during 9.6 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Brightwood, during the entire year, the rain falls for 144.4 days and collects up to 25.08" (637mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In December, it is snowing for 2.3 days. Throughout December, 1.69" (43mm) of snow is accumulated. Throughout the year, there are 15.4 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
The month with the shortest days in Brightwood is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:11 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:02 pm EST.
Sunshine
With an average of 5.2h of sunshine, December has the least sunshine of the year in Brightwood.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What are December temperatures in Brightwood?
What are the most humid months in Brightwood?
What is the average humidity in December in Brightwood?
How many days does it rain in December in Brightwood?
How much does it snow in Brightwood in December?
What is the month with the shortest days in Brightwood?
How many hours of daylight does Brightwood have in December?
What time are sunrise and sunset in December in Brightwood?
What is the month with the least sunshine in Brightwood?
How long on average sun shines in December in Brightwood?
What are the months with the lowest UV index in Brightwood?
What is the UV index reading in December in Brightwood?
Average temperature in December
Brightwood, VA
- Average high temperature in December: 46.4°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 (41.4°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Brightwood, 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
Brightwood, VA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Brightwood, VA
- Average humidity in December: 77%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Brightwood, VA
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in December
Brightwood, VA
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is May (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in December
Brightwood, VA
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Brightwood, VA
- Average snowfall days in December: 2.3 days
The months with the highest number of snowfall days are January and February (4.8 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
Brightwood, 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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Brightwood, VA
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in December
Brightwood, 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
Brightwood, 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 31).
Average visibility in December
Brightwood, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Brightwood, Virginia, USA
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