December weather forecast
Quantico, VA

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Weather in December

As winter sets in, December presents the most significant drop in temperature levels descending to smooth but chilly 46.9°F (8.3°C). The month is marked by its festive cheer and the anticipation of holiday season. Expect the occasional snowfall marking the onset of the jolly season. December calls for warm coats and snug fires, paired with hot drinks and good company. The holiday lights twinkle against the frosted landscapes marking the end of the year and beckoning the new beginnings that await in the coming year.

Temperature

December heralds a minor drop in average high-temperature, sliding from November's fresh 55.2°F (12.9°C) to a frosty 46.9°F (8.3°C). December witnesses an average nighttime temperature of 33.6°F (0.9°C) in Quantico.

Humidity

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

Rainfall

In Quantico, during December, the rain falls for 10.4 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Quantico, Virginia, during the entire year, the rain falls for 155.6 days and collects up to 31.61" (803mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:08 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 in Quantico are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 2 in December transforms into this advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are December temperatures in Quantico?

In December, in Quantico, the average high-temperature is 46.9°F (8.3°C), and the average low-temperature is 33.6°F (0.9°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 98.6°F (37°C).

What is the most humid month in Quantico?

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

What is the average humidity in December in Quantico?

In Quantico, Virginia, the average relative humidity in December is 78%.

How many days does it rain in December in Quantico?

In Quantico, in December, during 10.4 rainfall days, 2.6" (66mm) of precipitation is typically 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?

December has the shortest days of the year in Quantico, with an average of 9h and 30min of daylight.

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

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

When are sunrise and sunset in December in Quantico?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:48 pm. On the last day of the month, in Quantico, 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 are February and December, with an average of 5.1h of sunshine.

How long on average sun shines in December in Quantico?

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

What are the months with the lowest UV index in Quantico?

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

What is the UV index intensity in December in Quantico?

The average daily maximum UV index in December in Quantico is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
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 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 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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Quantico, Virginia, USA

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