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
With the arrival of December, Ashburn experiences a modest decline in average high-temperatures, transitioning from a refreshing 66.6°F (19.2°C) in November to a mild 60.6°F (15.9°C). Ashburn, during the nights of December, experiences an average temperature drop to a frosty 45.3°F (7.4°C).Humidity
In Ashburn, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 9 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. In Ashburn, during the entire year, the rain falls for 145.3 days and collects up to 20.08" (510mm) of precipitation.Snowfall
In Ashburn, snow does not fall in March through December.Daylight
December has the shortest days of the year, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 5:30 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:41 pm EST.
Sunshine
The month with the least sunshine in Ashburn is December, with an average of 5.4h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 3 in December suggests the following recommendations:
Undertake protective steps - Preventing sun damage is advised. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Ashburn have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Ashburn have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Ashburn, GA
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in December: 45.3°F
The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in December
Ashburn, GA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in December
Ashburn, GA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Ashburn, GA
- Average humidity in December: 76%
The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are January, October and November (71%).
Average rainfall in December
Ashburn, GA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in December
Ashburn, GA
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in December
Ashburn, GA
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Ashburn, GA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Ashburn, GA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Ashburn, GA
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is November (21.5 days).
The months with the least sunshine days are July and August (9.8 days).
Average UV index in December
Ashburn, GA
- Average UV index in December: 3
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 3).
Average cloud cover in December
Ashburn, GA
- Average cloud cover in December: 41
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May, June and October (Cloud cover 28).
Average visibility in December
Ashburn, GA
- 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).
Ashburn, Georgia, USA
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