December weather forecast
Blacksburg, VA

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Weather in December

Winter in Blacksburg, Virginia formally sets in with December. The advent of this month brings shorter days, with the daylight duration dipping down to 9.6 hours, and relatively reduced daily sunshine hours. On the flip side, snowfall climbs to an average of 4.17" (106mm), instating the full arrival of winter. As the city prepares for the holiday season, the wholesome spirit is complemented by the season's frostiness. The course of the month prepares Blacksburg to complete its climatological calendar and to welcome the return of January.

Temperature

December's onset in Blacksburg introduces a mild reduction in the average high-temperature, from a fresh 52°F (11.1°C) in November to a chilly 44.6°F (7°C). December in Blacksburg witnesses an average low-temperature hovering around a freezing cold 30.2°F (-1°C).

Humidity

The months with the highest humidity in Blacksburg, Virginia, are February and December, with an average relative humidity of 80%.

Rainfall

In December, in Blacksburg, the rain falls for 12.9 days. Throughout December, 2.72" (69mm) of precipitation is accumulated. Throughout the year, in Blacksburg, there are 181.4 rainfall days, and 30.98" (787mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Blacksburg, Virginia, are January through May, October through December. In Blacksburg, during December, snow falls for 5.5 days and regularly aggregates up to 4.17" (106mm) of snow. Throughout the year, there are 32.6 snowfall days, and 19.96" (507mm) of snow is accumulated.

Daylight

With an average of 9h and 42min of daylight, December has the shortest days of the year in Blacksburg.
On the first day of the month, sunrise is at 7:17 am and sunset at 5:04 pm. On the last day of December, in Blacksburg, sunrise is at 7:35 am and sunset at 5:14 pm EST.

Sunshine

In December, the average sunshine in Blacksburg, Virginia, is 5.2h.

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 health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is it in Blacksburg in December?

In Blacksburg, in December, the average high-temperature is 44.6°F (7°C), and the average low-temperature is 30.2°F (-1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 87.8°F (31°C).

What is the most humid month in Blacksburg?

February and December, with an average relative humidity of 80%, are most humid months in Blacksburg, Virginia.

What is the average humidity in December in Blacksburg?

In Blacksburg, Virginia, the average relative humidity in December is 80%.

How many days does it rain in December in Blacksburg?

In Blacksburg, Virginia, in December, it is raining for 12.9 days, with typically 2.72" (69mm) of accumulated precipitation.

How much does it snow in Blacksburg in December?

In Blacksburg, in December, snow falls for 5.5 days, with typically accumulated 4.17" (106mm) of snow.

What is the month with the shortest days in Blacksburg?

The month with the shortest days in Blacksburg is December, with an average of 9h and 42min of daylight.

How many hours of daylight does Blacksburg have in December?

In December, the average day length is 9h and 39min.

What time are sunrise and sunset in December in Blacksburg?

On the first day of December in Blacksburg, Virginia, sunrise is at 7:17 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:14 pm EST.

How long on average sun shines in December in Blacksburg?

In December, the average sunshine duration in Blacksburg is 5.2h.

When is the lowest UV index in Blacksburg?

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

What is the UV index reading in December in Blacksburg?

The average daily maximum UV index in December in Blacksburg is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe 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
Blacksburg, VA

Average temperature in December - Blacksburg, VA
  • Average high temperature in December: 44.6°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (39.4°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in December
Blacksburg, VA

Average pressure in December - Blacksburg, VA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in December
Blacksburg, VA

Average wind speed in December - Blacksburg, VA
  • Average wind speed in December: 6.5mph

The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in December
Blacksburg, VA

Average humidity in December - Blacksburg, VA
  • Average humidity in December: 80%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is July (75%).

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Average rainfall in December
Blacksburg, VA

Average rainfall in December - Blacksburg, VA
  • Average rainfall in December: 2.72"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days in December
Blacksburg, VA

Average rainfall days in December - Blacksburg, VA
  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is November (9.8 days).

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Average snowfall in December
Blacksburg, VA

Average snowfall in December - Blacksburg, VA
  • Average snowfall in December: 4.17"

The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Blacksburg, VA

Average snowfall days in December - Blacksburg, VA
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is February (8.8 days).
The 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
Blacksburg, VA

Average daylight in December / Average sunshine in December - Blacksburg, 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 42min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in December
Blacksburg, VA

Average sunshine days in December - Blacksburg, VA
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is May (8.6 days).

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Average UV index in December
Blacksburg, VA

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

The months with the highest UV index are 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
Blacksburg, VA

Average cloud cover in December - Blacksburg, VA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 35).

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Average visibility in December
Blacksburg, VA

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

The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).

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Blacksburg, Virginia, USA

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