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 onset of December results in a small decrease in the average high-temperature, moderately receding from a fresh 53.2°F (11.8°C) in November to a chilly 45.3°F (7.4°C). Castlewood records a consistent low-temperature of 32°F (0°C) during December nights.Humidity
The average relative humidity in December is 80%.Rainfall
In Castlewood, Virginia, during December, the rain falls for 14.4 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Castlewood, during the entire year, the rain falls for 197.7 days and collects up to 36.69" (932mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Castlewood, in December, snow falls for 8.1 days, with typically accumulated 4.17" (106mm) of snow. Throughout the year, there are 41.9 snowfall days, and 19.8" (503mm) of snow is accumulated.Daylight
December has the shortest days of the year in Castlewood, Virginia, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 5:12 pm. On the last day of December, in Castlewood, sunrise is at 7:41 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Castlewood in December?
What is the average humidity in December in Castlewood?
How much does it rain in Castlewood in December?
How many days does it snow in December in Castlewood?
What is the month with the shortest days in Castlewood?
What is the average length of the day in December in Castlewood?
When are sunrise and sunset in December in Castlewood?
How many hours of sunshine does Castlewood have in December?
When is the lowest UV index in Castlewood?
What is the UV index intensity in December in Castlewood?
Average temperature in December
Castlewood, VA
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in December
Castlewood, 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
Castlewood, VA
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Castlewood, 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
Castlewood, VA
- Average rainfall in December: 3.23"
The wettest month (with the highest rainfall) is February (3.86").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Castlewood, VA
- Average rainfall days in December: 14.4 days
The months with the highest number of rainy days are May and July (21.1 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in December
Castlewood, VA
- Average snowfall in December: 4.17"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Castlewood, VA
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Castlewood, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Castlewood, VA
- Average sunshine days in December: 12 days
The months with the most sunshine days are October and November (15 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in December
Castlewood, VA
- Average UV index in December: 2
The months with the highest UV index are June 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
Castlewood, 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 35).
Average visibility in December
Castlewood, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Castlewood, Virginia, USA
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