December weather forecast
Quantico, VA

Weather in December

December, the first month of the winter in Quantico, is still a chilly month, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 33.6°F (0.9°C).

Temperature

In Quantico, the average high-temperature in December marginally drops from a fresh 55.2°F (12.9°C) in November to a frosty 46.9°F (8.3°C). The average low-temperature, in Quantico, is 33.6°F (0.9°C).

Humidity

October and December, with an average relative humidity of 78%, are the most humid months in Quantico.

Rainfall

In Quantico, during 10.4 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 155.6 rainfall days, and 31.61" (803mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 1.8 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Quantico, Virginia, during the entire year, snow falls for 13.5 days and aggregates up to 8.23" (209mm) of snow.

Daylight

December has the shortest days of the year in Quantico, with an average of 9h and 32min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:58 pm EST.

Sunshine

February and December, with an average of 5.1h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Quantico?

The average high-temperature, in December, in Quantico, is 46.9°F (8.3°C), while the average low-temperature is 33.6°F (0.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 98.6°F (37°C).

What is the most humid month in Quantico?

The months with the highest humidity in Quantico, Virginia, are October and December, with an average relative humidity of 78%.

What is the average humidity in December in Quantico?

The average relative humidity in December in Quantico is 78%.

How much does it rain in Quantico in December?

In December, in Quantico, Virginia, the rain falls for 10.4 days. Throughout December, 2.6" (66mm) of precipitation is accumulated.

How many days does it snow in December in Quantico?

In Quantico, in December, snow falls for 1.8 days, with typically accumulated 1.34" (34mm) of snow.

What is the month with the shortest days in Quantico?

With an average of 9h and 32min of daylight, December has the shortest days of the year in Quantico.

What is the average length of the day in December in Quantico?

In Quantico, Virginia, the average day length in December is 9h and 32min.

When are sunrise and sunset in December in Quantico?

On the first day of December in Quantico, sunrise is at 7:07 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:58 pm EST.

What is the month with the least sunshine in Quantico?

The months with the least sunshine in Quantico, Virginia, are February and December, with an average of 5.1h of sunshine.

How many hours of sunshine does Quantico have in December?

In December, the average sunshine duration in Quantico, Virginia, is 5.1h.

When is the lowest UV index in Quantico?

The months with the lowest UV index in Quantico are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Quantico?

In Quantico, Virginia, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Quantico, VA

Average temperature in December - Quantico, VA
  • Average high temperature in December: 46.9°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in December: 33.6°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

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Average pressure in December
Quantico, VA

Average pressure in December - Quantico, 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).

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Average wind speed in December
Quantico, VA

Average wind speed in December - Quantico, VA
  • Average wind speed in December: 6.1mph

The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Quantico, VA

Average humidity in December - Quantico, VA
  • Average humidity in December: 78%

The months with the highest relative humidity are October and December (78%).
The months with the lowest relative humidity are January, April and July (73%).

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Average rainfall in December
Quantico, VA

Average rainfall in December - Quantico, VA
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.97").

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Average rainfall days in December
Quantico, VA

Average rainfall days in December - Quantico, VA
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in December
Quantico, VA

Average snowfall in December - Quantico, VA
  • Average snowfall in December: 1.34"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Quantico, VA

Average snowfall days in December - Quantico, VA
  • Average snowfall days in December: 1.8 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Quantico, VA

Average daylight in December / Average sunshine in December - Quantico, VA
  • Average daylight in December: 9h and 32min

The month with the longest days is June (Average daylight: 14h and 49min).
The month with the shortest days is December (Average daylight: 9h and 32min).

  • Average sunshine in December: 5h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Quantico, VA

Average sunshine days in December - Quantico, VA
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in December
Quantico, VA

Average UV index in December - Quantico, 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).

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Average cloud cover in December
Quantico, VA

Average cloud cover in December - Quantico, 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 32).

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Average visibility in December
Quantico, VA

Average visibility in December - Quantico, VA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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