December weather forecast
Three Trees, SC

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Weather in December

The first month of the winter, December, is still a comfortable month in Three Trees, South Carolina, with an average temperature fluctuating between 49.3°F (9.6°C) and 60.8°F (16°C).

Temperature

The weather during December records an average high-temperature of a still comfortable 60.8°F (16°C), closely mirroring the preceding month. During December, the nighttime temperature averages of 49.3°F (9.6°C).

Humidity

December is the most humid month, with an average relative humidity of 78%.

Rainfall

In Three Trees, in December, it is raining for 11.1 days, with typically 4.25" (108mm) of accumulated precipitation. Throughout the year, there are 178.9 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January and December. December is the first month it typically snows in Three Trees. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.6 snowfall days, and 0.16" (4mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:21 am and sunset at 5:24 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.7h of sunshine.

UV index

In Three Trees, South Carolina, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 4 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

December temperatures vary between a high-temperature of 60.8°F (16°C) and a low-temperature of 49.3°F (9.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 91.4°F (33°C).

What is the most humid month?

The most humid month is December, with an average relative humidity of 78%.

What is the average humidity in December?

In December, the average relative humidity is 78%.

How much does it rain in December?

In December, the rain falls for 11.1 days. Throughout December, 4.25" (108mm) of precipitation is accumulated.

When does it start to snow in Three Trees?

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?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 10h and 2min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:04 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:24 pm EST.

What is the month with the least sunshine?

December has the least sunshine of the year in Three Trees, with an average of 5.7h of sunshine.

How many hours of sunshine does Three Trees have in December?

In Three Trees, the average sunshine duration in December is 5.7h.

What is the UV index intensity in December?

In Three Trees, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a medium health risk 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
Three Trees, SC

Average temperature in December - Three Trees, SC
  • Average high temperature in December: 60.8°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in December: 49.3°F

The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).

Average pressure in December
Three Trees, SC

Average pressure in December - Three Trees, SC
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in December
Three Trees, SC

Average wind speed in December - Three Trees, SC
  • Average wind speed in December: 8.7mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).

Average humidity in December
Three Trees, SC

Average humidity in December - Three Trees, SC
  • Average humidity in December: 78%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).

Average rainfall in December
Three Trees, SC

Average rainfall in December - Three Trees, SC
  • Average rainfall in December: 4.25"

The wettest month (with the highest rainfall) is August (7.13").
The driest month (with the least rainfall) is January (1.42").

Average rainfall days in December
Three Trees, SC

Average rainfall days in December - Three Trees, SC
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in December
Three Trees, SC

Average snowfall in December - Three Trees, SC
  • Average snowfall in December: 0.04"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Three Trees, SC

Average snowfall days in December - Three Trees, 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 March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Three Trees, SC

Average daylight in December / Average sunshine in December - Three Trees, 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 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Three Trees, SC

Average sunshine days in December - Three Trees, SC
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (3.8 days).

Average UV index in December
Three Trees, SC

Average UV index in December - Three Trees, SC
  • Average UV index in December: 4

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

Average cloud cover in December
Three Trees, SC

Average cloud cover in December - Three Trees, SC
  • Average cloud cover in December: 39

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).

Average visibility in December
Three Trees, SC

Average visibility in December - Three Trees, 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).

Three Trees, South Carolina, USA

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