Columbia
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Columbia, SC

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
December, the first month of the winter, in Columbia, is also a moderate month, with average temperature varying between 56.5°F (13.6°C) and 42.1°F (5.6°C).

Temperature

In December, the average high-temperature slightly decreases, from an enjoyable 62.6°F (17°C) in November, to a moderate 56.5°F (13.6°C). The average low-temperature, in Columbia, is 42.1°F (5.6°C).

Humidity

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

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, there are 0.7 snowfall days, and 0.63" (16mm) of snow is accumulated.

Daylight

With an average of 9.9h of daylight, December has the shortest days of the year.

Sunshine

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

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Columbia. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Columbia?

The average high-temperature, in December, in Columbia, South Carolina, is 56.5°F (13.6°C), while the average low-temperature is 42.1°F (5.6°C).

What is the most humid month in Columbia?

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

What is the average humidity in December in Columbia?

The average relative humidity in December is 74%.

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.

What is the wettest month in Columbia?

The month with the most rainfall is December when the rain falls for 10.8 days and typically aggregates up to 2.91" (74mm) of precipitation.

When does it start snowing in Columbia?

December is the first month it typically snows in Columbia. 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, South Carolina, is December, with an average of 9.9h of daylight.

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

The average length of the day in December is 9.9h.

What is the month with the least sunshine in Columbia?

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

How many hours of sunshine does Columbia have in December?

The average sunshine in December in Columbia is 5.3h.

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

Months with the lowest UV index in Columbia are January, February and December, with an average maximum UV index of 3.

What is the UV index intensity 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 health threat from the exposure to the Sun's UV radiation.
Average temperature in December - Columbia, SC
  • Average high temperature in December: 13.6°C

The warmest month (with the highest average high temperature) is July (33.1°C).
The month with the lowest average high temperature is January (11.6°C).

  • Average low temperature in December: 5.6°C

The month with the highest average low temperature is July (23.2°C).
The coldest month (with the lowest average low temperature) is January (3.3°C).

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

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

Average rainfall in December - Columbia, SC
  • Average rainfall in December: 74mm

The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the lowest rainfall) is September (37mm).

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 lowest number of rainy days is October (7.3 days).

Average snowfall in December - Columbia, SC
  • Average snowfall in December: 1mm

The month with the highest snowfall is February (12mm).
Months with the lowest snowfall are March, April, May, June, July, August, September, October and November (0mm).

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).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December / Average sunshine in December - Columbia, SC
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 5.3h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is December (Average sunshine: 5.3h).

Average UV index in December - Columbia, SC
  • Average UV index in December: 3

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