December weather forecast
Siler City, NC

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Weather in December

The first month of the winter, December, is also a fresh month in Siler City, North Carolina, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 36.9°F (2.7°C).

Temperature

December reveals a small adjustment in temperature, transitioning from an average high of a moderate 58.6°F (14.8°C) in November to a cool 52.2°F (11.2°C). The temperature in Siler City dips to an average of 36.9°F (2.7°C) during December nights.

Humidity

With an average relative humidity of 77%, December is the most humid month in Siler City, North Carolina.

Rainfall

In Siler City, during December, the rain falls for 10.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Siler City, during the entire year, the rain falls for 156.8 days and collects up to 30.51" (775mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Siler City, during December, snow falls for 0.5 days and regularly aggregates up to 1.65" (42mm) of snow. In Siler City, during the entire year, snow falls for 5.9 days and aggregates up to 6.22" (158mm) of snow.

Daylight

The month with the shortest days in Siler City is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 5:04 pm. On the last day of December, in Siler City, sunrise is at 7:27 am and sunset at 5:14 pm EST.

Sunshine

January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Siler City.

UV index

In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 3 in December translates into this advice:
Undertake precautions - Guarding against sun damage is counselled. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average December temperature in Siler City?

In Siler City, in December, the average high-temperature is 52.2°F (11.2°C), and the average low-temperature is 36.9°F (2.7°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the most humid month in Siler City?

December is the most humid month in Siler City, North Carolina, with an average relative humidity of 77%.

What is the average humidity in December in Siler City?

In December, the average relative humidity in Siler City, North Carolina, is 77%.

How much does it rain in Siler City in December?

In Siler City, in December, during 10.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How much does it snow in Siler City in December?

In Siler City, North Carolina, in December, during 0.5 snowfall days, 1.65" (42mm) of snow is typically accumulated.

What is the month with the shortest days in Siler City?

The month with the shortest days is December, with an average of 9h and 48min of daylight.

How many hours of daylight does Siler City have in December?

The average day length in December is 9h and 47min.

When is the sunrise / sunset in December in Siler City?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:14 pm EST.

What are the months with the least sunshine in Siler City?

January and December, with an average of 5.5h of sunshine, are months with the least sunshine.

How many hours of sunshine does Siler City have in December?

In Siler City, the average sunshine duration in December is 5.5h.

What is the UV index reading in December in Siler City?

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's 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
Siler City, NC

Average temperature in December - Siler City, NC
  • Average high temperature in December: 52.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (47.8°F).

  • Average low temperature in December: 36.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (31.8°F).

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Average pressure in December
Siler City, NC

Average pressure in December - Siler City, NC
  • 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 (29.97"Hg).

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Average wind speed in December
Siler City, NC

Average wind speed in December - Siler City, NC
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Siler City, NC

Average humidity in December - Siler City, NC
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in December
Siler City, NC

Average rainfall in December - Siler City, NC
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is October (1.85").

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Average rainfall days in December
Siler City, NC

Average rainfall days in December - Siler City, NC
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in December
Siler City, NC

Average snowfall in December - Siler City, NC
  • Average snowfall in December: 1.65"

The month with the highest snowfall is January (1.97").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Siler City, NC

Average snowfall days in December - Siler City, NC
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (2.3 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
Siler City, NC

Average daylight in December / Average sunshine in December - Siler City, NC
  • 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

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Average sunshine days in December
Siler City, NC

Average sunshine days in December - Siler City, NC
  • Average sunshine days in December: 18.8 days

The months with the most sunshine days are October and November (20.5 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in December
Siler City, NC

Average UV index in December - Siler City, NC
  • Average UV index in December: 3

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in December
Siler City, NC

Average cloud cover in December - Siler City, NC
  • Average cloud cover in December: 42

The months with the most cloud cover are February, March and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 31).

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Average visibility in December
Siler City, NC

Average visibility in December - Siler City, NC
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Siler City, North Carolina, USA

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