December weather forecastSunset, SC

December

Weather in December

The first month of the winter, December, is still a chilly month in Sunset, South Carolina, with temperature in the range of an average high of 49.5°F (9.7°C) and an average low of 34.7°F (1.5°C).

Temperature

With the onset of December, the average high-temperature subtly recedes from November's moderate 56.3°F (13.5°C) to a frosty 49.5°F (9.7°C). Sunset in December experiences a low-temperature average of 34.7°F (1.5°C).

Humidity

The months with the highest humidity are May and December, with an average relative humidity of 77%.

Rainfall

December is the month with the most rainfall. Rain falls for 12.1 days and accumulates 4.53" (115mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 1.8 days and accumulates 4.57" (116mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:21 am and sunset at 5:19 pm. On the last day of December, sunrise is at 7:38 am and sunset at 5:30 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.7h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Sunset in December has an average high-temperature of 49.5°F (9.7°C) and an average low-temperature of 34.7°F (1.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 89.6°F (32°C).

The months with the highest humidity are May and December, with an average relative humidity of 77%.

In Sunset, the average relative humidity in December is 77%.

The month with the most rainfall is December, when the rain falls for 12.1 days and typically aggregates up to 4.53" (115mm) of precipitation.

In Sunset, in December, during 12.1 rainfall days, 4.53" (115mm) of precipitation is typically accumulated.

The month with the most snowfall is December, when snow falls for 1.8 days and typically aggregates up to 4.57" (116mm) of snow.

In Sunset, in December, snow falls for 1.8 days, with typically accumulated 4.57" (116mm) of snow.

The month with the shortest days is December, with an average of 9h and 54min of daylight.

The average day length in December is 9h and 51min.

On the first day of December, sunrise is at 7:21 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:30 pm EST.

December has the least sunshine of the year, with an average of 5.7h of sunshine.

In December, the average sunshine duration is 5.7h.

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

In Sunset, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

56.3°F

49.5°F

45.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph

5.6mph

6.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

18.1

16.5

15.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Sunset, SC

Average high temperature in December: 49.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (45.3°F).

Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

Average pressure in December
Sunset, SC

Average pressure in December: 30.14"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in December
Sunset, SC

Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in December
Sunset, SC

Average humidity in December: 77%

The months with the highest relative humidity are May and December (77%).
The month with the lowest relative humidity is November (73%).

Average rainfall in December
Sunset, SC

Average rainfall in December: 4.53"

The wettest month (with the highest rainfall) is December (4.53").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in December
Sunset, SC

Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is November (9.9 days).

Average snowfall in December
Sunset, SC

Average snowfall in December: 4.57"

The month with the highest snowfall is December (4.57").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Sunset, SC

Average snowfall days in December: 1.8 days

The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Sunset, SC

Average daylight in December: 9h and 54min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

Average sunshine in December: 5h and 42min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Sunset, SC

Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in December
Sunset, SC

Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Sunset, SC

Average cloud cover in December: 41

The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in December
Sunset, SC

Average visibility in December: 5mi

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