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
December
Weather in December
Temperature
With the onset of December, Manassas Park experiences a modest temperature adjustment, with the average high-temperature gently receding from a cool 54.5°F (12.5°C) in November to a frosty 45.7°F (7.6°C). Manassas Park experiences a nighttime temperature average of 32.4°F (0.2°C) during December.Humidity
The most humid month in Manassas Park is December, with an average relative humidity of 78%.Rainfall
In Manassas Park, in December, it is raining for 10.3 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 157.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.Snowfall
Months with snowfall in Manassas Park are January through April, November and December. In Manassas Park, in December, snow falls for 2.5 days, with typically accumulated 1.61" (41mm) of snow. 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 in Manassas Park, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:48 pm. On the last day of December, in Manassas Park, sunrise is at 7:27 am and sunset at 4:58 pm EST.
Sunshine
January, February and December, with an average of 5.2h of sunshine, are months with the least sunshine in Manassas Park.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Manassas Park. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Manassas Park in December?
What is the most humid month in Manassas Park?
What is the average humidity in December in Manassas Park?
How much does it rain in Manassas Park in December?
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?
What time are sunrise and sunset in December in Manassas Park?
What are the months 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?
How high is the UV index 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 3min
The month with the longest days is June (Average daylight: 14h and 48min).
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 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).