December weather forecastManassas, GA
December
Weather in December
December, the first month of the winter in Manassas, is still a mild month, with an average temperature varying between 60.4°F (15.8°C) and 45.3°F (7.4°C).Temperature
December implies a soft temperature shift, with average high-temperatures reducing from November's enjoyable 66.7°F (19.3°C) to a moderate 60.4°F (15.8°C). Manassas temperatures generally rest at a low of 45.3°F (7.4°C) during the December nights.Humidity
August, September and December, with an average relative humidity of 77%, are the most humid months in Manassas.Rainfall
In Manassas, Georgia, during December, the rain falls for 10.1 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, in Manassas, there are 149.6 rainfall days, and 22.52" (572mm) of precipitation is accumulated.Snowfall
Months with snowfall are January and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Manassas, there are 0.6 snowfall days, and 0.12" (3mm) of snow is accumulated.Daylight
December has the shortest days of the year in Manassas, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 7:11 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:33 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.3h of sunshine.UV index
In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 4 in December transforms into the following instructions:
Take precautions - Protection against sunburn is recommended. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Manassas, GA
- Average high temperature in December: 60.4°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (57.2°F).
- Average low temperature in December: 45.3°F
The months with the highest average low temperature are July and August (73.2°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in December
Manassas, GA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Manassas, GA
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Manassas, GA
- Average humidity in December: 77%
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is January (71%).
Average rainfall in December
Manassas, GA
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in December
Manassas, GA
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in December
Manassas, GA
- Average snowfall in December: 0.04"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Manassas, GA
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are February and March (0.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Manassas, GA
- Average daylight in December: 10h and 6min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Manassas, GA
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in December
Manassas, GA
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Manassas, GA
- Average cloud cover in December: 42
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 30).
Average visibility in December
Manassas, 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).
