December weather forecast
Tega Cay, SC

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Weather in December

The first month of the winter, December, is also a fresh month in Tega Cay, South Carolina, with temperature in the range of an average high of 53.1°F (11.7°C) and an average low of 39°F (3.9°C).

Temperature

Tega Cay's progression into December involves a gentle drop in the average high-temperature, from a refreshing 59.9°F (15.5°C) in November to a fresh 53.1°F (11.7°C). Throughout the December nights, Tega Cay encounters a low-temperature of 39°F (3.9°C).

Humidity

December is the most humid month in Tega Cay, South Carolina, with an average relative humidity of 75%.

Rainfall

The month with the most rainfall is December, when the rain falls for 11.6 days and typically aggregates up to 3.46" (88mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Tega Cay, South Carolina. December is the first month it typically snows in Tega Cay. Throughout December, in the average 0.5 snowfall days, it receives 0.87" (22mm) of snow. Throughout the year, in Tega Cay, there are 3.9 snowfall days, and 3.66" (93mm) of snow is accumulated.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year in Tega Cay, South Carolina.
On the first day of December in Tega Cay, sunrise is at 7:14 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:22 pm EST.

Sunshine

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

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Tega Cay. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What are December temperatures in Tega Cay?

In Tega Cay, in December, the average high-temperature is 53.1°F (11.7°C), and the average low-temperature is 39°F (3.9°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 89.6°F (32°C).

What is the most humid month in Tega Cay?

With an average relative humidity of 75%, December is the most humid month in Tega Cay, South Carolina.

What is the average humidity in December in Tega Cay?

In Tega Cay, South Carolina, the average relative humidity in December is 75%.

What is the wettest month in Tega Cay?

December is the month with the most rainfall. Rain falls for 11.6 days and accumulates 3.46" (88mm) of precipitation.

How much does it rain in Tega Cay in December?

In Tega Cay, in December, it is raining for 11.6 days, with typically 3.46" (88mm) of accumulated precipitation.

When does it start snowing in Tega Cay?

December is the first month it typically snows in Tega Cay. Throughout December, in the average 0.5 snowfall days, it receives 0.87" (22mm) of snow.

What is the month with the shortest days in Tega Cay?

With an average of 9h and 48min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Tega Cay?

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

When are sunrise and sunset in December in Tega Cay?

On the first day of December in Tega Cay, South Carolina, sunrise is at 7:14 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:22 pm EST.

What is the month with the least sunshine in Tega Cay?

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

How many hours of sunshine does Tega Cay have in December?

In December, the average sunshine duration is 5.3h.

When is the lowest UV index in Tega Cay?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Tega Cay, South Carolina.

How high is the UV index in December in Tega Cay?

In Tega Cay, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Tega Cay, SC

Average temperature in December - Tega Cay, SC
  • Average high temperature in December: 53.1°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in December: 39°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

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Average pressure in December
Tega Cay, SC

Average pressure in December - Tega Cay, 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
Tega Cay, SC

Average wind speed in December - Tega Cay, SC
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Tega Cay, SC

Average humidity in December - Tega Cay, SC
  • Average humidity in December: 75%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in December
Tega Cay, SC

Average rainfall in December - Tega Cay, SC
  • Average rainfall in December: 3.46"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in December
Tega Cay, SC

Average rainfall days in December - Tega Cay, SC
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.6 days).

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Average snowfall in December
Tega Cay, SC

Average snowfall in December - Tega Cay, SC
  • Average snowfall in December: 0.87"

The month with the highest snowfall is February (1.34").
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
Tega Cay, SC

Average snowfall days in December - Tega Cay, SC
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.7 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
Tega Cay, SC

Average daylight in December / Average sunshine in December - Tega Cay, 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 48min).

  • 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
Tega Cay, SC

Average sunshine days in December - Tega Cay, SC
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in December
Tega Cay, SC

Average UV index in December - Tega Cay, SC
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Tega Cay, SC

Average cloud cover in December - Tega Cay, SC
  • Average cloud cover in December: 43

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Tega Cay, SC

Average visibility in December - Tega Cay, 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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Tega Cay, South Carolina, USA

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