December weather forecast
Triangle, VA

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Weather in December

December, the first month of the winter in Triangle, is also a frosty month, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 33.6°F (0.9°C).

Temperature

In the transition to December, Triangle observes a minor drop in the average high-temperature, shifting from a fresh 55.2°F (12.9°C) in November to a frosty 46.9°F (8.3°C). During the month of December, Triangle anticipates a mean low-temperature of 33.6°F (0.9°C).

Humidity

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

Rainfall

In Triangle, during December, the rain falls for 10.4 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, in Triangle, there are 155.6 rainfall days, and 31.61" (803mm) of precipitation is accumulated.

Snowfall

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

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:48 pm. On the last day of December, 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 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 unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

An average high-temperature, in December, in Triangle, is 46.9°F (8.3°C) and the average low-temperature is 33.6°F (0.9°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 98.6°F (37°C).

What are the most humid months?

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

What is the average humidity in December?

The average relative humidity in December is 78%.

How many days does it rain in December?

In Triangle, Virginia, during December, the rain falls for 10.4 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How many days does it snow in December?

In Triangle, in December, during 1.8 snowfall days, 1.34" (34mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

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

What time are sunrise and sunset in December?

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.

What is the month with the least sunshine?

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

How many hours of sunshine does Triangle have in December?

In December, the average sunshine duration is 5.1h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Triangle, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Triangle, VA

Average temperature in December - Triangle, 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).

Average pressure in December
Triangle, VA

Average pressure in December - Triangle, 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).

Average wind speed in December
Triangle, VA

Average wind speed in December - Triangle, 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).

Average humidity in December
Triangle, VA

Average humidity in December - Triangle, 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%).

Average rainfall in December
Triangle, VA

Average rainfall in December - Triangle, 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").

Average rainfall days in December
Triangle, VA

Average rainfall days in December - Triangle, 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).

Average snowfall in December
Triangle, VA

Average snowfall in December - Triangle, 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").

Average snowfall days in December
Triangle, VA

Average snowfall days in December - Triangle, 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).

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

Average daylight in December / Average sunshine in December - Triangle, 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).

Average sunshine days in December
Triangle, VA

Average sunshine days in December - Triangle, 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).

Average UV index in December
Triangle, VA

Average UV index in December - Triangle, 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).

Average cloud cover in December
Triangle, VA

Average cloud cover in December - Triangle, 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).

Average visibility in December
Triangle, VA

Average visibility in December - Triangle, 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).

Triangle, Virginia, USA

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