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 entails a subtle temperature shift, as the average high-temperature eases from a cool 52.3°F (11.3°C) in November to a frosty 43.9°F (6.6°C). Throughout December, a steady low-temperature average of 29.7°F (-1.3°C) is noted.Humidity
May, September, October and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Graves Mill, in December, it is raining for 4.4 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 64.9 rainfall days, and 5.51" (140mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Graves Mill. In December, in Graves Mill, it is snowing for 1.5 days. Throughout December, 0.16" (4mm) of snow is accumulated. In Graves Mill, during the entire year, snow falls for 9.1 days and aggregates up to 1.65" (42mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:12 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:03 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.1h of sunshine.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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Graves Mill have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Graves Mill have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Graves Mill, VA
- Average high temperature in December: 43.9°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 (39.2°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Graves Mill, VA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Graves Mill, VA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Graves Mill, VA
- Average humidity in December: 78%
The months with the highest relative humidity are May, September, October and December (78%).
The months with the lowest relative humidity are January and July (74%).
Average rainfall in December
Graves Mill, VA
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is August (0.71").
The driest month (with the least rainfall) is September (0.16").
Average rainfall days in December
Graves Mill, VA
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is April (7.3 days).
The months with the least rainy days are January and November (3.8 days).
Average snowfall in December
Graves Mill, VA
- Average snowfall in December: 0.16"
The month with the highest snowfall is March (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Graves Mill, VA
- Average snowfall days in December: 1.5 days
The months with the highest number of snowfall days are January and February (2.4 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
Graves Mill, 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 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Graves Mill, VA
- Average sunshine days in December: 24.2 days
The month with the most sunshine days is October (25.4 days).
The months with the least sunshine days are April, May and August (21.5 days).
Average UV index in December
Graves Mill, 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
Graves Mill, VA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Graves Mill, VA
- Average visibility in December: 5mi
The months with the highest visibility are July and November (6mi).
The month with the lowest visibility is September (4mi).
Graves Mill, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location