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

Panorama of downtown Spartanburg in South Carolina

Weather in December

In December, Spartanburg, South Carolina bids farewell to the year under a stark winter canopy. The city experiences some of the coldest days of the year with the average high temperature falling to 52.7°F (11.5°C). Spartanburg's December weather features chill winds, shorter daylight hours, and a potential for snow towards the end of the month. Despite the cold, the city wraps itself in the festive spirit, making December a unique month in Spartanburg.

Temperature

A mild shift in the average high-temperature occurs in December in Spartanburg, reducing from a moderate 59.9°F (15.5°C) in November to a cool 52.7°F (11.5°C). In the month of December, Spartanburg experiences an average low-temperature of 38.5°F (3.6°C).

Humidity

December is the most humid month, with an average relative humidity of 76%.

Rainfall

The month with the most rainfall is December, when the rain falls for 10.2 days and typically aggregates up to 3.43" (87mm) of precipitation.

Snowfall

Months with snowfall are January through March and December. The month with the most snowfall is December, when snow falls for 0.5 days and typically aggregates up to 2.2" (56mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 7:17 am and sunset at 5:16 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:26 pm EST.

Sunshine

With an average of 5.3h 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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 2 translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

In Spartanburg, in December, the average high-temperature is 52.7°F (11.5°C), and the average low-temperature is 38.5°F (3.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the most humid month?

With an average relative humidity of 76%, December is the most humid month.

What is the average humidity in December?

In December, the average relative humidity is 76%.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 10.2 days and accumulates 3.43" (87mm) of precipitation.

How many days does it rain in December?

In Spartanburg, during December, the rain falls for 10.2 days and regularly aggregates up to 3.43" (87mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 0.5 days and typically aggregates up to 2.2" (56mm) of snow.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 2.2" (56mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Spartanburg have in December?

In December, the average day length is 9h and 51min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:17 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:26 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.3h of sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 5.3h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December in Spartanburg is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from 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

59.9°F 15.5°C

52.7°F 11.5°C

49.6°F 9.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.4mph 10.3km/h

6.6mph 10.6km/h

7mph 11.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.2

19.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Spartanburg, SC

Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (49.6°F).

Average low temperature in December: 38.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in December
Spartanburg, 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 (29.98"Hg).

Average wind speed in December
Spartanburg, SC

Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in December
Spartanburg, SC

Average humidity in December: 76%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (68%).

Average rainfall in December
Spartanburg, SC

Average rainfall in December: 3.43"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in December
Spartanburg, SC

Average rainfall days in December: 10.2 days

The months with the highest number of rainy days are July and August (15.8 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in December
Spartanburg, SC

Average snowfall in December: 2.2"

The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Spartanburg, SC

Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December: 9h and 5min

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 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in December
Spartanburg, SC

Average sunshine days in December: 19.8 days

The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (12.7 days).

Average UV index in December
Spartanburg, 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
Spartanburg, SC

Average cloud cover in December: 43

The months with the most cloud cover are February and December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 29).

Average visibility in December
Spartanburg, 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).

December weather forecast
Spartanburg, SC

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