December weather forecast
Columbia, SC

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The Us State House of South Carolina, in Columbia, with the Wade Hampton Statue
The Us State House of South Carolina, in Columbia, with the Wade Hampton Statue

Weather in December

December lays down distinctly lower temperatures, marking the oncoming winter, with the average high being 56.5°F (13.6°C). The highest rainfall amount for the year is observed in December, amounting to 2.91" (74mm). The city witnesses the shortest daylight hours of the year, highlighting the winter season. A moderate rise in wind speeds adds to the chill factor. The sky is generally cloudy, meaning the sun is rarely visible, reducing the UV index to a minimum.

Temperature

A minor decrease in the average high-temperature is observed during December, shifting from a comfortable 62.6°F (17°C) in November to a still refreshing 56.5°F (13.6°C). During the nights in December, the temperature averages to a cold 42.1°F (5.6°C).

Humidity

December is the most humid month, with an average relative humidity of 74%.

Rainfall

December is the month with the most rainfall in Columbia. Rain falls for 10.8 days and accumulates 2.91" (74mm) of precipitation.

Snowfall

January, February and December are months with snowfall in Columbia. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Columbia, there are 0.7 snowfall days, and 0.63" (16mm) of snow is accumulated.

Daylight

The month with the shortest days in Columbia is December, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 7:11 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:25 pm EST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year in Columbia.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 3 in December suggests the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are December temperatures in Columbia?

The average high-temperature, in December, in Columbia, is 56.5°F (13.6°C), while the average low-temperature is 42.1°F (5.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 93.2°F (34°C).

What is the most humid month in Columbia?

December is the most humid month in Columbia, with an average relative humidity of 74%.

What is the average humidity in December in Columbia?

The average relative humidity in December is 74%.

What is the wettest month in Columbia?

December is the month with the most rainfall in Columbia. Rain falls for 10.8 days and accumulates 2.91" (74mm) of precipitation.

How much does it rain in Columbia in December?

In Columbia, South Carolina, during December, the rain falls for 10.8 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When does it start snowing in Columbia?

December is the first month it typically snows. 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 Columbia?

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

How many hours of daylight does Columbia have in December?

In December, the average day length is 9h and 56min.

What time are sunrise and sunset in December in Columbia?

On the first day of December in Columbia, South Carolina, sunrise is at 7:11 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:25 pm EST.

What is the month with the least sunshine in Columbia?

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

How long on average sun shines in December in Columbia?

In Columbia, the average sunshine duration in December is 5.3h.

What are the months with the lowest UV index in Columbia?

The months with the lowest UV index in Columbia, South Carolina, are January, February and December, with an average maximum UV index of 3.

How high is the UV index in December in Columbia?

In Columbia, South Carolina, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Columbia, SC

Average temperature in December - Columbia, SC
  • Average high temperature in December: 56.5°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (52.9°F).

  • Average low temperature in December: 42.1°F

The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

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Average pressure in December
Columbia, SC

Average pressure in December - Columbia, 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
Columbia, SC

Average wind speed in December - Columbia, SC
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
Columbia, SC

Average humidity in December - Columbia, SC
  • Average humidity in December: 74%

The month with the highest relative humidity is December (74%).
The months with the lowest relative humidity are January, July and November (69%).

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Average rainfall in December
Columbia, SC

Average rainfall in December - Columbia, SC
  • Average rainfall in December: 2.91"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.46").

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Average rainfall days in December
Columbia, SC

Average rainfall days in December - Columbia, SC
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (7.3 days).

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Average snowfall in December
Columbia, SC

Average snowfall in December - Columbia, SC
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Columbia, SC

Average snowfall days in December - Columbia, SC
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.3 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
Columbia, SC

Average daylight in December / Average sunshine in December - Columbia, SC
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
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 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in December
Columbia, SC

Average sunshine days in December - Columbia, SC
  • Average sunshine days in December: 19.1 days

The month with the most sunshine days is October (22.7 days).
The month with the least sunshine days is July (11.7 days).

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Average UV index in December
Columbia, SC

Average UV index in December - Columbia, 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, February and December (UV index 3).

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Average cloud cover in December
Columbia, SC

Average cloud cover in December - Columbia, SC
  • Average cloud cover in December: 42

The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are June and October (Cloud cover 29).

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Average visibility in December
Columbia, SC

Average visibility in December - Columbia, 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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Columbia, South Carolina, USA

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