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
In Grays, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's fresh 55°F (12.8°C) to a chilly 46.6°F (8.1°C). Grays sees an average low-temperature of 32.5°F (0.3°C) during December.Humidity
The months with the highest humidity in Grays are February and December, with an average relative humidity of 79%.Rainfall
In Grays, in December, during 14.2 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 186.6 rainfall days, and 33.15" (842mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is December, when snow falls for 6.6 days and typically aggregates up to 3.5" (89mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Grays.On the first day of December in Grays, sunrise is at 7:24 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:24 pm EST.
Sunshine
In Grays, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What is the average December temperature in Grays?
What is the most humid month in Grays?
What is the average humidity in December in Grays?
How many days does it rain in December in Grays?
What is the snowiest month in Grays?
How many days does it snow in December in Grays?
What is the month with the shortest days in Grays?
What is the average length of the day in December in Grays?
When are sunrise and sunset in December in Grays?
How long on average sun shines in December in Grays?
When is the lowest UV index in Grays?
What is the UV index intensity in December in Grays?
Average temperature in December
Grays, VA
- Average high temperature in December: 46.6°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (42.1°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 (27.1°F).
Average pressure in December
Grays, 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
Grays, VA
- Average wind speed in December: 5.6mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Grays, VA
- Average humidity in December: 79%
The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are June, July, August, September and November (75%).
Average rainfall in December
Grays, VA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is February (3.82").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Grays, VA
- Average rainfall days in December: 14.2 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in December
Grays, VA
- Average snowfall in December: 3.5"
The month with the highest snowfall is December (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Grays, VA
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grays, 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: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Grays, VA
- Average sunshine days in December: 12.8 days
The months with the most sunshine days are October and November (16.3 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in December
Grays, 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 and December (UV index 2).
Average cloud cover in December
Grays, VA
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Grays, VA
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Grays, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location
