December weather forecast and climate
Banner, VA

Weather in December

December, the first month of the winter, in Banner, is still a chilly month, with average temperature varying between 32°F (0°C) and 44.2°F (6.8°C).

Temperature

In December, the average high-temperature marginally drops, from a fresh 52.5°F (11.4°C) in November, to a frosty 44.2°F (6.8°C). In December, in Banner, the average low-temperature is 32°F (0°C).

Humidity

In December, the average relative humidity in Banner is 81%.

Rainfall

In Banner, it is raining for 10.8 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 179.6 rainfall days, and 38.7" (983mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Banner, in December, snow falls for 8.7 days, with typically accumulated 6.42" (163mm) of snow. In Banner, during the entire year, snow falls for 45 days, and aggregates up to 29.09" (739mm) of snow.

Daylight

December has the shortest days of the year in Banner, with an average of 9.7h of daylight.

Sunshine

In Banner, the average sunshine in December is 4.3h.

UV index

Months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Banner?

In Banner, Virginia, the average relative humidity in December is 81%.

How many days does it rain in December in Banner?

In December, the rain falls for 10.8 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How much does it snow in Banner in December?

In Banner, in December, snow falls for 8.7 days, with typically accumulated 6.42" (163mm) of snow.

What is the month with the shortest days in Banner?

With an average of 9.7h of daylight, December has the shortest days of the year in Banner, Virginia.

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

The average length of the day in December is 9.7h.

How long on average sun shines in December in Banner?

In Banner, the average sunshine in December is 4.3h.

When is the lowest UV index in Banner?

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

How high is the UV index in December in Banner?

The average daily maximum UV index in December in Banner, Virginia, is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
Banner, VA

Average temperature in December - Banner, VA
  • Average high temperature in December: 44.2°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (39.4°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

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Average pressure in December
Banner, VA

Average pressure in December - Banner, VA
  • Average pressure in December: 30.15"

Months with the highest atmospheric pressure are January and November (30.16").
The month with the lowest atmospheric pressure is June (29.99").

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Average wind speed in December
Banner, VA

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

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4mph).

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Average humidity in December
Banner, VA

Average humidity in December - Banner, VA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
Months with the lowest relative humidity are April and November (77%).

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Average rainfall in December
Banner, VA

Average rainfall in December - Banner, VA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is July (3.94").
The driest months (with the least rainfall) are September and November (2.52").

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Average rainfall days in December
Banner, VA

Average rainfall days in December - Banner, VA
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (9.4 days).

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Average snowfall in December
Banner, VA

Average snowfall in December - Banner, VA
  • Average snowfall in December: 6.42"

The month with the highest snowfall is February (6.85").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Banner, VA

Average snowfall days in December - Banner, VA
  • Average snowfall days in December: 8.7 days

The month with the highest number of snowfall days is January (11.4 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Banner, VA
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 4.3h

Months with the most sunshine are June and August (Average sunshine: 9.5h).
The month with the least sunshine is January (Average sunshine: 4.1h).

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Average sunshine days in December
Banner, VA

Average sunshine days in December - Banner, VA
  • Average sunshine days in December: 14 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9 days).

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Average UV index in December
Banner, VA

Average UV index in December - Banner, VA
  • Average UV index in December: 2

Months with the highest UV index are June and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in December
Banner, VA

Average cloud cover in December - Banner, VA
  • Average cloud cover in December: 59

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 39).

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Average visibility in December
Banner, VA

Average visibility in December - Banner, VA
  • Average visibility in December: 5mi

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

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