December weather forecast
South Mills, NC

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Weather in December

The first month of the winter, December, is still a cool month in South Mills, North Carolina, with temperature in the range of an average high of 53.1°F (11.7°C) and an average low of 41.9°F (5.5°C).

Temperature

South Mills records a mild change in average high-temperature during December, easing from a refreshing 59.9°F (15.5°C) in November to a fresh 53.1°F (11.7°C). December nights are marked by an average low-temperature of 41.9°F (5.5°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In South Mills, in December, it is raining for 11.6 days, with typically 2.32" (59mm) of accumulated precipitation. In South Mills, during the entire year, the rain falls for 165 days and collects up to 29.06" (738mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In South Mills, during December, snow falls for 0.5 days and regularly aggregates up to 0.2" (5mm) of snow. Throughout the year, there are 4.6 snowfall days, and 2.09" (53mm) of snow is accumulated.

Daylight

With an average of 9h and 42min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:59 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:00 pm EST.

Sunshine

The average sunshine in December in South Mills is 5.5h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in South Mills. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

In South Mills, 53.1°F (11.7°C) is the average high-temperature and 41.9°F (5.5°C) is the average low-temperature during December. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is calculated to be 95°F (35°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

How many days does it rain in December?

In South Mills, in December, during 11.6 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

How much does it snow in South Mills in December?

In South Mills, in December, snow falls for 0.5 days, with typically accumulated 0.2" (5mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does South Mills have in December?

The average day length in December in South Mills is 9h and 43min.

When is the sunrise / sunset in December in South Mills?

On the first day of December, sunrise is at 6:59 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:00 pm EST.

How many hours of sunshine does South Mills have in December?

The average sunshine duration in December is 5.5h.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat 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
South Mills, NC

Average temperature in December - South Mills, NC
  • Average high temperature in December: 53.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (47.8°F).

  • Average low temperature in December: 41.9°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36°F).

Average pressure in December
South Mills, NC

Average pressure in December - South Mills, NC
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in December
South Mills, NC

Average wind speed in December - South Mills, NC
  • Average wind speed in December: 8.9mph

The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in December
South Mills, NC

Average humidity in December - South Mills, NC
  • Average humidity in December: 78%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is November (75%).

Average rainfall in December
South Mills, NC

Average rainfall in December - South Mills, NC
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is November (1.57").

Average rainfall days in December
South Mills, NC

Average rainfall days in December - South Mills, NC
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is August (18.4 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in December
South Mills, NC

Average snowfall in December - South Mills, NC
  • Average snowfall in December: 0.2"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
South Mills, NC

Average snowfall days in December - South Mills, NC
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
South Mills, NC

Average daylight in December / Average sunshine in December - South Mills, NC
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 5h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

Average sunshine days in December
South Mills, NC

Average sunshine days in December - South Mills, NC
  • Average sunshine days in December: 18.3 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is August (9.4 days).

Average UV index in December
South Mills, NC

Average UV index in December - South Mills, NC
  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
South Mills, NC

Average cloud cover in December - South Mills, NC
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 27).

Average visibility in December
South Mills, NC

Average visibility in December - South Mills, 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).

South Mills, North Carolina, USA

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