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 advent of December brings a subtle shift in temperature, with the average high moving from a cool 54°F (12.2°C) in November to a chilly 45.5°F (7.5°C). During December, an average low-temperature of 32.5°F (0.3°C) is observed.Humidity
In December, the average relative humidity is 80%.Rainfall
In Blackwater, in December, during 12.6 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Blackwater, Virginia, during the entire year, the rain falls for 176.3 days and collects up to 32.87" (835mm) of precipitation.Snowfall
Months with snowfall in Blackwater, Virginia, are January through April, October through December. In Blackwater, Virginia, during December, snow falls for 6.2 days and regularly aggregates up to 3.15" (80mm) of snow. Throughout the year, in Blackwater, there are 30 snowfall days, and 12.44" (316mm) 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 5:16 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:26 pm EST.
Sunshine
In December, the average sunshine in Blackwater is 4.8h.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the temperature in December in Blackwater?
What is the average humidity in December in Blackwater?
How many days does it rain in December in Blackwater?
How many days does it snow in December in Blackwater?
What is the month with the shortest days in Blackwater?
What is the average length of the day in December in Blackwater?
When are sunrise and sunset in December in Blackwater?
How many hours of sunshine does Blackwater have in December?
When is the lowest UV index in Blackwater?
How high is the UV index in December in Blackwater?
Average temperature in December
Blackwater, VA
- Average high temperature in December: 45.5°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 (41°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Blackwater, VA
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Blackwater, VA
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Blackwater, VA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August and November (76%).
Average rainfall in December
Blackwater, VA
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Blackwater, VA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Blackwater, VA
- Average snowfall in December: 3.15"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Blackwater, VA
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is January (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
Blackwater, VA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Blackwater, VA
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in December
Blackwater, 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
Blackwater, VA
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Blackwater, 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).
Blackwater, Virginia, USA
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