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 shift from November to December involves a decrease in the average high-temperature, dropping from a fresh 53.2°F (11.8°C) to a chilly 44.1°F (6.7°C). December's nights observe an average temperature of 31.1°F (-0.5°C).Humidity
The months with the highest humidity are October and December, with an average relative humidity of 78%.Rainfall
In Leesburg, during December, the rain falls for 11.1 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Leesburg, during the entire year, the rain falls for 161.6 days and collects up to 31.38" (797mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Leesburg, in December, during 3.2 snowfall days, 2.05" (52mm) of snow is typically accumulated. Throughout the year, there are 18.2 snowfall days, and 12.6" (320mm) of snow is accumulated.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 7:11 am and sunset at 4:48 pm. On the last day of December, in Leesburg, sunrise is at 7:29 am and sunset at 4:57 pm EST.
Sunshine
The average sunshine in December is 5.1h.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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Leesburg have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Leesburg, VA
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Leesburg, VA
- Average pressure in December: 30.11"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
Leesburg, VA
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Leesburg, VA
- Average humidity in December: 78%
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Leesburg, VA
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Leesburg, VA
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in December
Leesburg, VA
- Average snowfall in December: 2.05"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Leesburg, VA
- Average snowfall days in December: 3.2 days
The months with the highest number of snowfall days are January and February (5.5 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
Leesburg, VA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
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 48min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Leesburg, VA
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Leesburg, 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
Leesburg, VA
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Leesburg, VA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, July, August, September, November and December (6mi).
The months with the lowest visibility are January, May and October (5mi).
Leesburg, Virginia, USA
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