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 is marked by a minor decrease in temperature, transitioning from a mild 57.2°F (14°C) in November to a frosty 49.1°F (9.5°C). In December, Gaines Mill experiences a temperature dip to an average of 35.6°F (2°C) at night.Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In Gaines Mill, Virginia, in December, it is raining for 8.6 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, in Gaines Mill, there are 133.2 rainfall days, and 18.94" (481mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Gaines Mill, Virginia, in December, snow falls for 0.7 days, with typically accumulated 0.43" (11mm) of snow. Throughout the year, in Gaines Mill, there are 6 snowfall days, and 2.4" (61mm) of snow is accumulated.Daylight
The month with the shortest days in Gaines Mill is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:51 pm. On the last day of December, in Gaines Mill, Virginia, sunrise is at 7:23 am and sunset at 5:01 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 5.2h of sunshine.UV index
January 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 minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 in December translates into these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Gaines Mill in December?
What is the most humid month in Gaines Mill?
What is the average humidity in December in Gaines Mill?
How many days does it rain in December in Gaines Mill?
How much does it snow in Gaines Mill in December?
What is the month with the shortest days in Gaines Mill?
What is the average length of the day in December in Gaines Mill?
When are sunrise and sunset in December in Gaines Mill?
What are the months with the least sunshine in Gaines Mill?
How long on average sun shines in December in Gaines Mill?
What are the months with the lowest UV index in Gaines Mill?
How high is the UV index in December in Gaines Mill?
Average temperature in December
Gaines Mill, VA
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Gaines 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 (29.95"Hg).
Average wind speed in December
Gaines Mill, VA
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Gaines Mill, 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 (69%).
Average rainfall in December
Gaines Mill, VA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in December
Gaines Mill, VA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is May (14.8 days).
The months with the least rainy days are October and November (8.2 days).
Average snowfall in December
Gaines Mill, VA
- Average snowfall in December: 0.43"
The month with the highest snowfall is March (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Gaines Mill, VA
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gaines Mill, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Gaines Mill, VA
- Average sunshine days in December: 21.4 days
The months with the most sunshine days are October and December (21.4 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in December
Gaines Mill, 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
Gaines Mill, VA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Gaines Mill, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Gaines Mill, Virginia, USA
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