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 start of December involves a subtle temperature drop, shifting from a refreshing 57.4°F (14.1°C) in November to a cool 50.2°F (10.1°C). In Susan, December nights cool down to an average of 38.3°F (3.5°C).Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In December, the rain falls for 12.2 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. In Susan, during the entire year, the rain falls for 165.3 days and collects up to 34.25" (870mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Susan, Virginia, in December, snow falls for 1.1 days, with typically accumulated 0.51" (13mm) of snow. In Susan, during the entire year, snow falls for 8.3 days and aggregates up to 4.13" (105mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:01 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:57 pm EST.
Sunshine
In Susan, the average sunshine in December is 5.4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December in Susan?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Susan have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Susan, VA
- Average high temperature in December: 50.2°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Susan, VA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Susan, VA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Susan, 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
Susan, VA
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in December
Susan, VA
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in December
Susan, VA
- Average snowfall in December: 0.51"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Susan, VA
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Susan, 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 36min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Susan, VA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Susan, VA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Susan, VA
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Susan, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Susan, Virginia, USA
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