December weather forecast
Chapel Hill, NC

Red flowers and green trees around the Old Well at the iconic UNC in Chapel Hill, North Carolina
Red flowers and green trees around the Old Well at the iconic UNC in Chapel Hill, North Carolina

Weather in December

The first month of the winter, December, is also a fresh month in Chapel Hill, North Carolina, with an average temperature varying between 51.8°F (11°C) and 37.2°F (2.9°C).

Temperature

In December, the average high-temperature slightly decreases from a moderate 58.6°F (14.8°C) in November to a cool 51.8°F (11°C). In December, the average low-temperature is 37.2°F (2.9°C).

Humidity

With an average relative humidity of 77%, December is the most humid month.

Rainfall

In Chapel Hill, during December, the rain falls for 7.5 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, in Chapel Hill, there are 130 rainfall days, and 14.21" (361mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Chapel Hill, during 0.5 snowfall days, 0.43" (11mm) of snow is typically accumulated. Throughout the year, there are 4 snowfall days, and 1.5" (38mm) of snow is accumulated.

Daylight

The month with the shortest days in Chapel Hill is December, with an average of 9h and 46min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:12 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.4h of sunshine.

UV index

The months with the lowest UV index are January 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 average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Chapel Hill?

In Chapel Hill, in December, the average high-temperature is 51.8°F (11°C), and the average low-temperature is 37.2°F (2.9°C). in September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the most humid month in Chapel Hill?

With an average relative humidity of 77%, December is the most humid month.

What is the average humidity in December in Chapel Hill?

The average relative humidity in December in Chapel Hill is 77%.

How many days does it rain in December in Chapel Hill?

In Chapel Hill, North Carolina, during December, the rain falls for 7.5 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How many days does it snow in December in Chapel Hill?

In Chapel Hill, North Carolina, in December, snow falls for 0.5 days, with typically accumulated 0.43" (11mm) of snow.

What is the month with the shortest days in Chapel Hill?

With an average of 9h and 46min of daylight, December has the shortest days of the year.

How many hours of daylight does Chapel Hill have in December?

In Chapel Hill, the average day length in December is 9h and 46min.

What time are sunrise and sunset in December in Chapel Hill?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 5:02 pm. On the last day of the month, in Chapel Hill, North Carolina, sunrise is at 7:26 am and sunset at 5:12 pm EST.

What is the month with the least sunshine in Chapel Hill?

The month with the least sunshine in Chapel Hill, North Carolina, is December, with an average of 5.4h of sunshine.

How many hours of sunshine does Chapel Hill have in December?

The average sunshine duration in December in Chapel Hill, North Carolina, is 5.4h.

When is the lowest UV index in Chapel Hill?

The months with the lowest UV index in Chapel Hill, North Carolina, are January and December, with an average maximum UV index of 2.

How high is the UV index in December in Chapel Hill?

In Chapel Hill, North Carolina, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Chapel Hill, NC

Average temperature in December - Chapel Hill, NC
  • Average high temperature in December: 51.8°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in December: 37.2°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 (32°F).

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Average pressure in December
Chapel Hill, NC

Average pressure in December - Chapel Hill, NC
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in December
Chapel Hill, NC

Average wind speed in December - Chapel Hill, NC
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Chapel Hill, NC

Average humidity in December - Chapel Hill, NC
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in December
Chapel Hill, NC

Average rainfall in December - Chapel Hill, NC
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is October (0.83").

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Average rainfall days in December
Chapel Hill, NC

Average rainfall days in December - Chapel Hill, NC
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is November (6.4 days).

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Average snowfall in December
Chapel Hill, NC

Average snowfall in December - Chapel Hill, NC
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Chapel Hill, NC

Average snowfall days in December - Chapel Hill, NC
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Chapel Hill, NC

Average daylight in December / Average sunshine in December - Chapel Hill, NC
  • Average daylight in December: 9h and 46min

The month with the longest days is June (Average daylight: 14h and 34min).
The month with the shortest days is December (Average daylight: 9h and 46min).

  • Average sunshine in December: 5h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in December
Chapel Hill, NC

Average sunshine days in December - Chapel Hill, NC
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is October (22.3 days).
The months with the least sunshine days are July and August (12.8 days).

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Average UV index in December
Chapel Hill, NC

Average UV index in December - Chapel Hill, NC
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Chapel Hill, NC

Average cloud cover in December - Chapel Hill, NC
  • Average cloud cover in December: 42

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).

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Average visibility in December
Chapel Hill, NC

Average visibility in December - Chapel Hill, NC
  • Average visibility in December: 6mi

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

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