December weather forecast
Unison, VA

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Weather in December

December, the first month of the winter in Unison, is still a chilly month, with an average temperature fluctuating between 43.7°F (6.5°C) and 30.9°F (-0.6°C).

Temperature

December is characterized by a slight reduction in average high-temperature, easing from a fresh 52.5°F (11.4°C) in November to a frosty 43.7°F (6.5°C). During the December nights, an average temperature of 30.9°F (-0.6°C) is observed.

Humidity

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

Rainfall

In December, in Unison, the rain falls for 10.7 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. In Unison, during the entire year, the rain falls for 162.2 days and collects up to 31.1" (790mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 3.8 days. Throughout December, 2.68" (68mm) of snow is accumulated. Throughout the year, there are 21.9 snowfall days, and 14.88" (378mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of December, in Unison, Virginia, sunrise is at 7:29 am and sunset at 4:58 pm EST.

Sunshine

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

UV index

The months with the lowest UV index in Unison are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

Is it cold in Unison during December?

The high-temperature, in December, in Unison, records 43.7°F (6.5°C), while the low-temperature is 30.9°F (-0.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 93.2°F (34°C).

What are the most humid months in Unison?

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

What is the average humidity in December in Unison?

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

How many days does it rain in December in Unison?

In Unison, during December, the rain falls for 10.7 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How many days does it snow in December in Unison?

In Unison, in December, snow falls for 3.8 days, with typically accumulated 2.68" (68mm) of snow.

What is the month with the shortest days in Unison?

The month with the shortest days in Unison is December, with an average of 9h and 30min of daylight.

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

The average day length in December in Unison is 9h and 29min.

What time are sunrise and sunset in December in Unison?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, in Unison, Virginia, sunrise is at 7:29 am and sunset at 4:58 pm EST.

What is the month with the least sunshine in Unison?

January and December, with an average of 5.1h of sunshine, are months with the least sunshine in Unison, Virginia.

How long on average sun shines in December in Unison?

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

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

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

How high is the UV index in December in Unison?

In December, the average daily maximum UV index in Unison is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Unison, VA

Average temperature in December - Unison, VA
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in December
Unison, VA

Average pressure in December - Unison, 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
Unison, VA

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

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

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Average humidity in December
Unison, VA

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

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).

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Average rainfall in December
Unison, VA

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

The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in December
Unison, VA

Average rainfall days in December - Unison, VA
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall in December
Unison, VA

Average snowfall in December - Unison, VA
  • Average snowfall in December: 2.68"

The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Unison, VA

Average snowfall days in December - Unison, VA
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Unison, VA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
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 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Unison, VA

Average sunshine days in December - Unison, VA
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in December
Unison, VA

Average UV index in December - Unison, 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
Unison, VA

Average cloud cover in December - Unison, 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 30).

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Average visibility in December
Unison, VA

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

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

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Unison, Virginia, USA

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