December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

The natural formation of the oak canopies along the South Boundary Street in Aiken, South Carolina

Weather in December

December ushers in winter in Aiken, South Carolina. The city is adorned with festive decorations under the cover of shorter days and colder temperatures. The month witnesses the least amount of daylight and sunshine hours. Temperatures can drop to as low as 42.4°F (5.8°C) and rise to a maximum of 56.7°F (13.7°C). December observes the most rainfall in a year, at about 3.15" (80mm), and even a slight chance of snowfall, around 0.04" (1mm), adding to the holiday cheer.

Temperature

December is characterized by a slight reduction in average high-temperature, easing from an enjoyable 62.8°F (17.1°C) in November to a still refreshing 56.7°F (13.7°C). During December, Aiken records a consistent average nighttime temperature of 42.4°F (5.8°C).

Humidity

December is the most humid month, with an average relative humidity of 75%.

Rainfall

December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 3.15" (80mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Aiken, South Carolina. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Aiken, during the entire year, snow falls for 1.1 days and aggregates up to 0.71" (18mm) of snow.

Daylight

December has the shortest days of the year, with an average of 10h and 0min of daylight.
On the first day of December, sunrise is at 7:13 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:29 pm EST.

Sunshine

With an average of 5.4h 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 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

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Frequently asked questions

What is the average December temperature in Aiken?

In December, in Aiken, the average high-temperature is 56.7°F (13.7°C), and the average low-temperature is 42.4°F (5.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in September is evaluated at 93.2°F (34°C).

What is the most humid month in Aiken?

With an average relative humidity of 75%, December is the most humid month in Aiken, South Carolina.

What is the average humidity in December in Aiken?

In December, the average relative humidity in Aiken, South Carolina, is 75%.

What is the rainiest month in Aiken?

December is the month with the most rainfall in Aiken. Rain falls for 10.9 days and accumulates 3.15" (80mm) of precipitation.

How much does it rain in Aiken in December?

In Aiken, during December, the rain falls for 10.9 days and regularly aggregates up to 3.15" (80mm) of precipitation.

When does it start to snow in Aiken?

December is the first month it typically snows in Aiken. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days in Aiken?

December has the shortest days of the year in Aiken, South Carolina, with an average of 10h and 0min of daylight.

How many hours of daylight does Aiken have in December?

In December, the average day length in Aiken is 9h and 58min.

What time are sunrise and sunset in December in Aiken?

On the first day of December in Aiken, South Carolina, sunrise is at 7:13 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:29 pm EST.

What is the month with the least sunshine in Aiken?

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

How long on average sun shines in December in Aiken?

The average sunshine duration in December is 5.4h.

When is the lowest UV index in Aiken?

January 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 Aiken?

In December, the average daily maximum UV index in Aiken is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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

62.8°F 17.1°C

56.7°F 13.7°C

53.2°F 11.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.1mph 13km/h

8.3mph 13.4km/h

8.9mph 14.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

21.2

18.8

19.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Aiken, SC

Average high temperature in December: 56.7°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (53.2°F).

Average low temperature in December: 42.4°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

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Average pressure in December
Aiken, SC

Average pressure in December: 30.14"Hg

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in December
Aiken, SC

Average wind speed in December: 7.8mph

The windiest months (with the highest average wind speed) are February and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in December
Aiken, SC

Average humidity in December: 75%

The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are July and November (70%).

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Average rainfall in December
Aiken, SC

Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in December
Aiken, SC

Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are October and November (7.7 days).

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Average snowfall in December
Aiken, SC

Average snowfall in December: 0.04"

The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Aiken, SC

Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

Average sunshine in December: 5h and 2min

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

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Average sunshine days in December
Aiken, SC

Average sunshine days in December: 18.8 days

The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in December
Aiken, SC

Average UV index in December: 3

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

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Average cloud cover in December
Aiken, SC

Average cloud cover in December: 41

The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in December
Aiken, 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).

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December weather forecast
Aiken, SC

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