December weather forecastArial, SC

December

Weather in December

The first month of the winter, December, is still a cool month in Arial, South Carolina, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 37.8°F (3.2°C).

Temperature

December sees a slight reduction in average high-temperature, with a shift from a moderate 59.9°F (15.5°C) in November to a fresh 52.7°F (11.5°C). In Arial, the average low-temperature during the month of December is a cold 37.8°F (3.2°C).

Humidity

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

Rainfall

The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.66" (93mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. December is the month with the most snowfall in Arial. Snow falls for 0.5 days and accumulates 2.01" (51mm) 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 December, sunrise is at 7:20 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:29 pm EST.

Sunshine

With an average of 5.5h of sunshine, December has the least sunshine of the year.

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 low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Arial, is 52.7°F (11.5°C), while the low-temperature averages to 37.8°F (3.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is calculated to be 87.8°F (31°C).

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

In December, the average relative humidity is 77%.

The month with the most rainfall in Arial is December, when the rain falls for 11.5 days and typically aggregates up to 3.66" (93mm) of precipitation.

In Arial, in December, during 11.5 rainfall days, 3.66" (93mm) of precipitation is typically accumulated.

The month with the most snowfall is December, when snow falls for 0.5 days and typically aggregates up to 2.01" (51mm) of snow.

In Arial, in December, snow falls for 0.5 days, with typically accumulated 2.01" (51mm) of snow.

December has the shortest days of the year, with an average of 9h and 54min of daylight.

The average day length in December is 9h and 52min.

In December, on the first day of the month, sunrise is at 7:20 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:29 pm EST.

The month with the least sunshine is December, with an average of 5.5h of sunshine.

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

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

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

59.9°F

52.7°F

49.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6mph

6.2mph

6.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.5

18.2

18.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Arial, SC

Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (49.3°F).

Average low temperature in December: 37.8°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in December
Arial, SC

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 (29.99"Hg).

Average wind speed in December
Arial, SC

Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Arial, SC

Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).

Average rainfall in December
Arial, SC

Average rainfall in December: 3.66"

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in December
Arial, SC

Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is November (7.8 days).

Average snowfall in December
Arial, SC

Average snowfall in December: 2.01"

The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Arial, SC

Average snowfall days in December: 0.5 days

The months with the highest number of snowfall days are January and February (1 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
Arial, 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 30min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in December
Arial, SC

Average sunshine days in December: 18.2 days

The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11.5 days).

Average UV index in December
Arial, SC

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 and December (UV index 2).

Average cloud cover in December
Arial, SC

Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in December
Arial, SC

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).