December weather forecast
South Mills, NC

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Weather in December

The first month of the winter, December, is also a fresh month in South Mills, North Carolina, with an average temperature ranging between max 53.1°F (11.7°C) and min 41.9°F (5.5°C).

Temperature

With December's onset, the weather reveals a slight temperature decrease, transitioning from a moderate 59.9°F (15.5°C) in November to a cool 53.1°F (11.7°C). South Mills's nighttime temperature in December falls to an average of 41.9°F (5.5°C).

Humidity

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

Rainfall

In December, in South Mills, the rain falls for 11.6 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in South Mills, there are 165 rainfall days, and 29.06" (738mm) of precipitation is accumulated.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:50 pm. On the last day of December, 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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum UV index of 3 in December translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. 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

What is the average December temperature in South Mills?

The average high-temperature and low-temperature during December are 53.1°F (11.7°C) and 41.9°F (5.5°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 95°F (35°C).

What is the average humidity in December in South Mills?

In December, the average relative humidity in South Mills, North Carolina, is 78%.

How much does it rain in South Mills in December?

In South Mills, North Carolina, during December, the rain falls for 11.6 days and regularly aggregates up to 2.32" (59mm) of precipitation.

How many days does it snow in December in South Mills?

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

What is the month with the shortest days in South Mills?

December has the shortest days of the year, with an average of 9h and 42min of daylight.

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

In December, the average day length in South Mills, North Carolina, is 9h and 43min.

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

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

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

In South Mills, North Carolina, the average sunshine duration in December is 5.5h.

What is the month with the lowest UV index in South Mills?

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

What is the UV index reading in December in South Mills?

In South Mills, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
59.9°F 15.5°C
53.1°F 11.7°C
47.8°F 8.8°C
Average low temperature
47.8°F 8.8°C
41.9°F 5.5°C
36°F 2.2°C
Average pressure
30.13" 765mmHg
30.12" 765mmHg
30.11" 765mmHg
Average wind speed
9.1mph 14.6km/h
8.9mph 14.3km/h
9.5mph 15.3km/h
Average max. wind speed
9.9mph 15.9km/h
9.6mph 15.4km/h
10.3mph 16.6km/h
Average wind speed gusts
14.7mph 23.7km/h
14.5mph 23.3km/h
15.2mph 24.5km/h
Average humidity
75%
78%
76%
Average rainfall
1.57" 40mm
2.32" 59mm
1.81" 46mm
Average rainfall days
9.8
11.6
10.3
Average snowfall
0.12" 3mm
0.2" 5mm
0.63" 16mm
Average snowfall days
0.2
0.5
1.5
Average daylight
10h 1min
9h 4min
10h 0min
Average sunshine
5h 4min
5h 3min
5h 3min
Average sunshine days
17.3
18.3
17.3
Average UV index
3
3
3
Average cloud cover
36%
41%
40%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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South Mills, North Carolina, USA

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