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 December, the average high-temperature marginally drops from a cool 54.5°F (12.5°C) in November to a chilly 45.7°F (7.6°C). In December, the average low-temperature is 32.4°F (0.2°C).Humidity
The most humid month in Manassas Park, Virginia, is December, with an average relative humidity of 78%.Rainfall
In Manassas Park, during December, the rain falls for 10.3 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, in Manassas Park, there are 157.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.Snowfall
Months with snowfall in Manassas Park, Virginia, are January through April, November and December. In Manassas Park, during 2.5 snowfall days, 1.61" (41mm) of snow is typically accumulated. In Manassas Park, during the entire year, snow falls for 15.8 days and aggregates up to 11.5" (292mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 31min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:57 pm EST.
Sunshine
The months with the least sunshine in Manassas Park, Virginia, are January, February and December, with an average of 5.2h of sunshine.UV index
The months with the lowest UV index in Manassas Park are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 2 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the temperature in December in Manassas Park?
What is the most humid month in Manassas Park?
What is the average humidity in December in Manassas Park?
How many days does it rain in December in Manassas Park?
How much does it snow in Manassas Park in December?
What is the month with the shortest days in Manassas Park?
How many hours of daylight does Manassas Park have in December?
When are sunrise and sunset in December in Manassas Park?
What is the month with the least sunshine in Manassas Park?
How long on average sun shines in December in Manassas Park?
What are the months with the lowest UV index in Manassas Park?
What is the UV index reading in December in Manassas Park?
Average temperature in December
Manassas Park, VA
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in December
Manassas Park, 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
Manassas Park, VA
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are March and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Manassas Park, 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 (72%).
Average rainfall in December
Manassas Park, VA
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Manassas Park, VA
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in December
Manassas Park, VA
- Average snowfall in December: 1.61"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Manassas Park, VA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (5.2 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
Manassas Park, VA
- Average daylight in December: 9h and 31min
The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 31min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Manassas Park, VA
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Manassas Park, 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
Manassas Park, 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 31).
Average visibility in December
Manassas Park, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are May, September, October and December (5mi).
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