December weather forecast and climate
Piedmont, SC

The first month of the winter, December, is also a fresh month in Piedmont, South Carolina, with temperature in the range of an average low of 37.8°F (3.2°C) and an average high of 52.7°F (11.5°C).

Temperature

In Piedmont, the average high-temperature in December slightly decreases, from a mild 59.9°F (15.5°C) in November, to a fresh 52.7°F (11.5°C). In December, the average low-temperature is 37.8°F (3.2°C).

Humidity

The most humid month is December, with an average relative humidity of 77%.

Rainfall

The month with the most rainfall is December when the rain falls for 11.5 days and typically aggregates up to 3.66" (93mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 0.5 days and accumulates 2.01" (51mm) of snow.

Daylight

December has the shortest days of the year in Piedmont, South Carolina, with an average of 9.9h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 5.5h of sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Piedmont, South Carolina. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. 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 Piedmont?

The average high-temperature, in December, in Piedmont, South Carolina, is 52.7°F (11.5°C), while the average low-temperature is 37.8°F (3.2°C).

What is the most humid month in Piedmont?

December is the most humid month in Piedmont, with an average relative humidity of 77%.

What is the average humidity in December in Piedmont?

In Piedmont, the average relative humidity in December is 77%.

How much does it rain in Piedmont in December?

In December, the rain falls for 11.5 days. Throughout December, 3.66" (93mm) of precipitation is accumulated.

What is the rainiest month in Piedmont?

December is the month with the most rainfall in Piedmont, South Carolina. Rain falls for 11.5 days and accumulates 3.66" (93mm) of precipitation.

How much does it snow in Piedmont in December?

In Piedmont, South Carolina, during December, snow falls for 0.5 days and regularly aggregates up to 2.01" (51mm) of snow.

What is the snowiest month in Piedmont?

December is the month with the most snowfall. Snow falls for 0.5 days and accumulates 2.01" (51mm) of snow.

What is the month with the shortest days in Piedmont?

The month with the shortest days in Piedmont, South Carolina, is December, with an average of 9.9h of daylight.

How many hours of daylight does Piedmont have in December?

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

What is the month with the least sunshine in Piedmont?

December has the least sunshine of the year, with an average of 5.5h of sunshine.

How many hours of sunshine does Piedmont have in December?

In Piedmont, the average sunshine in December is 5.5h.

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

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

What is the UV index reading in December in Piedmont?

In December, the average daily maximum UV index in Piedmont, South Carolina, is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in December - Piedmont, SC
  • Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (49.3°F).

  • Average low temperature in December: 37.8°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in December - Piedmont, SC
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is November (30.15").
The month with the lowest atmospheric pressure is June (29.99").

Average wind speed in December - Piedmont, SC
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December - Piedmont, SC
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).

Average rainfall in December - Piedmont, SC
  • Average rainfall in December: 3.66"

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in December - Piedmont, SC
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is November (7.8 days).

Average snowfall in December - Piedmont, SC
  • Average snowfall in December: 2.01"

The month with the highest snowfall is December (2.01").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December - Piedmont, SC
  • Average snowfall days in December: 0.5 days

Months with the highest number of snowfall days are January and February (1 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 5.5h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.5h).

Average sunshine days in December - Piedmont, SC
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11.5 days).

Average UV index in December - Piedmont, SC
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in December - Piedmont, SC
  • Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in December - Piedmont, SC
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).