December weather forecast
Spartanburg, SC

Panorama of downtown Spartanburg in South Carolina
Panorama of downtown Spartanburg in South Carolina

Weather in December

The first month of the winter, December, is also a fresh month in Spartanburg, South Carolina, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 38.5°F (3.6°C).

Temperature

In December, the average high-temperature slightly decreases from a mild 59.9°F (15.5°C) in November to a cool 52.7°F (11.5°C). The average low-temperature, in December, is 38.5°F (3.6°C).

Humidity

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

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

January through March and December are months with snowfall in Spartanburg, South Carolina. 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 51min 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, in Spartanburg, sunrise is at 7:35 am and sunset at 5:26 pm EST.

Sunshine

December has the least sunshine of the year in Spartanburg, with an average of 5.3h of sunshine.

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 rays for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the most humid month in Spartanburg?

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

What is the average humidity in December in Spartanburg?

In December, the average relative humidity is 76%.

What is the wettest month in Spartanburg?

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

How many days does it rain in December in Spartanburg?

In Spartanburg, South Carolina, in December, it is raining for 10.2 days, with typically 3.43" (87mm) of accumulated precipitation.

What is the snowiest month in Spartanburg?

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 snowing in Spartanburg?

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 in Spartanburg?

December has the shortest days of the year in Spartanburg, South Carolina, with an average of 9h and 51min of daylight.

What is the average length of the day in December in Spartanburg?

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

What time are sunrise and sunset in December in Spartanburg?

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

What is the month with the least sunshine in Spartanburg?

The month with the least sunshine in Spartanburg, South Carolina, is December, with an average of 5.3h of sunshine.

How long on average sun shines in December in Spartanburg?

The average sunshine duration in December in Spartanburg, South Carolina, is 5.3h.

What is the month with the lowest UV index in Spartanburg?

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

How high is the UV index in December in Spartanburg?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.

Average temperature in December
Spartanburg, SC

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).

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Average pressure in December
Spartanburg, SC

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).

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Average wind speed in December
Spartanburg, SC

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).

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Average humidity in December
Spartanburg, SC

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%).

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Average rainfall in December
Spartanburg, SC

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").

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Average rainfall days in December
Spartanburg, SC

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).

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Average snowfall in December
Spartanburg, SC

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").

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Average snowfall days in December
Spartanburg, SC

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).

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

Average daylight in December / Average sunshine in December - Spartanburg, SC
  • Average daylight in December: 9h and 51min

The month with the longest days is June (Average daylight: 14h and 28min).
The month with the shortest days is December (Average daylight: 9h and 51min).

  • Average sunshine in December: 5.3h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days in December
Spartanburg, SC

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).

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Average UV index in December
Spartanburg, SC

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).

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Average cloud cover in December
Spartanburg, SC

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).

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Average visibility in December
Spartanburg, SC

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).

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