December weather forecast
Coal Center, PA

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Weather in December

December, the first month of the winter in Coal Center, is still a cold month, with an average temperature varying between 28.8°F (-1.8°C) and 40.1°F (4.5°C).

Temperature

The shift from November to December involves a decrease in the average high-temperature, dropping from a chilly 49.6°F (9.8°C) to a wintry 40.1°F (4.5°C). Throughout the month of December, Coal Center observes an average nighttime temperature of 28.8°F (-1.8°C).

Humidity

In December, the average relative humidity in Coal Center is 83%.

Rainfall

In Coal Center, during December, the rain falls for 14 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Coal Center, during the entire year, the rain falls for 191.3 days and collects up to 35.24" (895mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Coal Center. In Coal Center, Pennsylvania, in December, during 12.6 snowfall days, 4.88" (124mm) of snow is typically accumulated. Throughout the year, in Coal Center, there are 60.2 snowfall days, and 25.08" (637mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Coal Center.
On the first day of December, sunrise is at 7:23 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:04 pm EST.

Sunshine

In Coal Center, the average sunshine in December is 3.6h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 1 in December translates into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

How cold is December in Coal Center?

In December, the average high-temperature and low-temperature in Coal Center, Pennsylvania, are 40.1°F (4.5°C) and 28.8°F (-1.8°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in December in Coal Center?

In Coal Center, Pennsylvania, the average relative humidity in December is 83%.

How many days does it rain in December in Coal Center?

In Coal Center, during December, the rain falls for 14 days and regularly aggregates up to 3.07" (78mm) of precipitation.

How much does it snow in Coal Center in December?

In Coal Center, Pennsylvania, in December, during 12.6 snowfall days, 4.88" (124mm) of snow is typically accumulated.

What is the month with the shortest days in Coal Center?

The month with the shortest days in Coal Center, Pennsylvania, is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Coal Center?

The average day length in December in Coal Center, Pennsylvania, is 9h and 23min.

What time are sunrise and sunset in December in Coal Center?

On the first day of December in Coal Center, Pennsylvania, sunrise is at 7:23 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:04 pm EST.

How many hours of sunshine does Coal Center have in December?

In Coal Center, the average sunshine duration in December is 3.6h.

What is the month with the lowest UV index in Coal Center?

December is the month with the lowest UV index, with an average maximum UV index of 1.

How high is the UV index in December in Coal Center?

In December, the average daily maximum UV index in Coal Center is 1. A UV Index reading of 2, and below, represents a low 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
Coal Center, PA

Average temperature in December - Coal Center, PA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 28.8°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in December
Coal Center, PA

Average pressure in December - Coal Center, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Coal Center, PA

Average wind speed in December - Coal Center, PA
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in December
Coal Center, PA

Average humidity in December - Coal Center, PA
  • Average humidity in December: 83%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).

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Average rainfall in December
Coal Center, PA

Average rainfall in December - Coal Center, PA
  • Average rainfall in December: 3.07"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").

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Average rainfall days in December
Coal Center, PA

Average rainfall days in December - Coal Center, PA
  • Average rainfall days in December: 14 days

The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).

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Average snowfall in December
Coal Center, PA

Average snowfall in December - Coal Center, PA
  • Average snowfall in December: 4.88"

The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Coal Center, PA

Average snowfall days in December - Coal Center, PA
  • Average snowfall days in December: 12.6 days

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Coal Center, PA

Average daylight in December / Average sunshine in December - Coal Center, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 3h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in December
Coal Center, PA

Average sunshine days in December - Coal Center, PA
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).

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Average UV index in December
Coal Center, PA

Average UV index in December - Coal Center, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Coal Center, PA

Average cloud cover in December - Coal Center, PA
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Coal Center, PA

Average visibility in December - Coal Center, PA
  • Average visibility in December: 5mi

The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January and February (4mi).

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Coal Center, Pennsylvania, USA

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