December weather forecast
King William, VA

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Weather in December

The first month of the winter, December, is also a frosty month in King William, Virginia, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 49.1°F (9.5°C).

Temperature

As December commences, the average high-temperature subtly reduces, transitioning from a refreshing 56.8°F (13.8°C) in November to a chilly 49.1°F (9.5°C). An average nighttime temperature of 35.2°F (1.8°C) is witnessed throughout December.

Humidity

The most humid month in King William is December, with an average relative humidity of 79%.

Rainfall

In King William, Virginia, in December, during 11.2 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In King William, during the entire year, the rain falls for 157.7 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In December, in King William, it is snowing for 1.8 days. Throughout December, 1.85" (47mm) of snow is accumulated. In King William, Virginia, during the entire year, snow falls for 11.4 days and aggregates up to 7.87" (200mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:59 pm EST.

Sunshine

February and December, with an average of 5.3h of sunshine, are months with the least sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Enhance your sun protection with tightly woven, yet airy clothing. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What are the temperatures in King William in December?

An average high-temperature, in December, in King William, is 49.1°F (9.5°C) and the average low-temperature is 35.2°F (1.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in September is computed to be 84.2°F (29°C).

What is the most humid month in King William?

The most humid month is December, with an average relative humidity of 79%.

What is the average humidity in December in King William?

In King William, the average relative humidity in December is 79%.

How many days does it rain in December in King William?

In December, in King William, Virginia, the rain falls for 11.2 days. Throughout December, 2.52" (64mm) of precipitation is accumulated.

How many days does it snow in December in King William?

In King William, in December, during 1.8 snowfall days, 1.85" (47mm) of snow is typically accumulated.

What is the month with the shortest days in King William?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

How many hours of daylight does King William have in December?

The average day length in December is 9h and 37min.

When is the sunrise / sunset in December in King William?

On the first day of December in King William, Virginia, sunrise is at 7:05 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:59 pm EST.

What is the month with the least sunshine in King William?

February and December, with an average of 5.3h of sunshine, are months with the least sunshine in King William.

How many hours of sunshine does King William have in December?

In King William, the average sunshine duration in December is 5.3h.

What are the months with the lowest UV index in King William?

The months with the lowest UV index in King William are January and December, with an average maximum UV index of 2.

What is the UV index reading in December in King William?

The average daily maximum UV index in December in King William, Virginia, is 2. A UV Index reading of 2, and below, represents 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
King William, VA

Average temperature in December - King William, VA
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in December: 35.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).

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Average pressure in December
King William, VA

Average pressure in December - King William, VA
  • Average pressure in December: 30.12"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
King William, VA

Average wind speed in December - King William, VA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
King William, VA

Average humidity in December - King William, VA
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in December
King William, VA

Average rainfall in December - King William, VA
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is August (2.99").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in December
King William, VA

Average rainfall days in December - King William, VA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in December
King William, VA

Average snowfall in December - King William, VA
  • Average snowfall in December: 1.85"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
King William, VA

Average snowfall days in December - King William, VA
  • Average snowfall days in December: 1.8 days

The month with the highest number of snowfall days is January (3.9 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
King William, VA

Average daylight in December / Average sunshine in December - King William, VA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).

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Average sunshine days in December
King William, VA

Average sunshine days in December - King William, VA
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in December
King William, VA

Average UV index in December - King William, 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 and December (UV index 2).

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Average cloud cover in December
King William, VA

Average cloud cover in December - King William, VA
  • Average cloud cover in December: 44

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
King William, VA

Average visibility in December - King William, VA
  • Average visibility in December: 5mi

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

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King William, Virginia, USA

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