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
Graves Mill's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's cool 52.3°F (11.3°C) to a chilly 43.9°F (6.6°C). Graves Mill's nights in December cool down to an average low-temperature of 29.7°F (-1.3°C).Humidity
May, September, October and December, with an average relative humidity of 78%, are the most humid months in Graves Mill.Rainfall
In December, the rain falls for 4.4 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. In Graves Mill, during the entire year, the rain falls for 64.9 days and collects up to 5.51" (140mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Graves Mill. In Graves Mill, in December, snow falls for 1.5 days, with typically accumulated 0.16" (4mm) of snow. 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
The month with the least sunshine is December, 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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold is December in Graves Mill?
What are the most humid months in Graves Mill?
What is the average humidity in December in Graves Mill?
How much does it rain in Graves Mill in December?
How many days does it snow in December in Graves Mill?
What is the month with the shortest days in Graves Mill?
What is the average length of the day in December in Graves Mill?
What time are sunrise and sunset in December in Graves Mill?
What is the month with the least sunshine in Graves Mill?
How many hours of sunshine does Graves Mill have in December?
When is the lowest UV index in Graves Mill?
What is the UV index intensity in December in Graves Mill?
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
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