December weather forecast
Chester, SC

Weather in December

December, the first month of the winter in Chester, is also a fresh month, with an average temperature fluctuating between 54.5°F (12.5°C) and 39.7°F (4.3°C).

Temperature

In Chester, the average high-temperature in December marginally drops from a moderate 60.4°F (15.8°C) in November to a fresh 54.5°F (12.5°C). In December, in Chester, the average low-temperature is 39.7°F (4.3°C).

Humidity

December is the most humid month in Chester, with an average relative humidity of 76%.

Rainfall

In Chester, during 10.9 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 157.1 rainfall days, and 31.06" (789mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. The month with the most snowfall in Chester is December, when snow falls for 0.3 days and typically aggregates up to 0.67" (17mm) of snow.

Daylight

The month with the shortest days in Chester is December, with an average of 9h and 52min of daylight.
On the first day of the month, sunrise is at 7:13 am and sunset at 5:14 pm. On the last day of December, in Chester, sunrise is at 7:31 am and sunset at 5:23 pm EST.

Sunshine

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

UV index

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Chester?

In Chester, South Carolina, in December, the average high-temperature is 54.5°F (12.5°C), and the average low-temperature is 39.7°F (4.3°C). in September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 91.4°F (33°C).

What is the most humid month in Chester?

With an average relative humidity of 76%, December is the most humid month in Chester, South Carolina.

What is the average humidity in December in Chester?

In December, the average relative humidity in Chester, South Carolina, is 76%.

How many days does it rain in December in Chester?

In Chester, during December, the rain falls for 10.9 days and regularly aggregates up to 3.15" (80mm) of precipitation.

When does it snow the most in Chester?

December is the month with the most snowfall in Chester. Snow falls for 0.3 days and accumulates 0.67" (17mm) of snow.

When does it start snowing in Chester?

December is the first month it typically snows in Chester. Throughout December, in the average 0.3 snowfall days, it receives 0.67" (17mm) of snow.

What is the month with the shortest days in Chester?

The month with the shortest days in Chester, South Carolina, is December, with an average of 9h and 52min of daylight.

How many hours of daylight does Chester have in December?

In Chester, South Carolina, the average day length in December is 9h and 52min.

What time are sunrise and sunset in December in Chester?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:23 pm EST.

What is the month with the least sunshine in Chester?

With an average of 5.5h of sunshine, December has the least sunshine of the year in Chester.

How many hours of sunshine does Chester have in December?

The average sunshine duration in December in Chester, South Carolina, is 5.5h.

What is the UV index reading in December in Chester?

The average daily maximum UV index in December in Chester, South Carolina, is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Chester, SC

Average temperature in December - Chester, SC
  • Average high temperature in December: 54.5°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (50.5°F).

  • Average low temperature in December: 39.7°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 (34.7°F).

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Average pressure in December
Chester, SC

Average pressure in December - Chester, 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
Chester, SC

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

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in December
Chester, SC

Average humidity in December - Chester, SC
  • Average humidity in December: 76%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in December
Chester, SC

Average rainfall in December - Chester, SC
  • Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is August (3.35").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in December
Chester, SC

Average rainfall days in December - Chester, SC
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is October (8.8 days).

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Average snowfall in December
Chester, SC

Average snowfall in December - Chester, SC
  • Average snowfall in December: 0.67"

The month with the highest snowfall is December (0.67").
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
Chester, SC

Average snowfall days in December - Chester, SC
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Chester, SC

Average daylight in December / Average sunshine in December - Chester, SC
  • Average daylight in December: 9h and 52min

The month with the longest days is June (Average daylight: 14h and 27min).
The month with the shortest days is December (Average daylight: 9h and 52min).

  • Average sunshine in December: 5h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in December
Chester, SC

Average sunshine days in December - Chester, SC
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in December
Chester, SC

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

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

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Average cloud cover in December
Chester, SC

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

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

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Average visibility in December
Chester, SC

Average visibility in December - Chester, 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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