December weather forecast
White Deer, PA

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Weather in December

December, the first month of the winter in White Deer, is also an icy month, with an average temperature fluctuating between 37.8°F (3.2°C) and 27.5°F (-2.5°C).

Temperature

In White Deer, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 47.5°F (8.6°C) to a cold 37.8°F (3.2°C). An average low-temperature of 27.5°F (-2.5°C) marks the month of December in White Deer.

Humidity

The average relative humidity in December in White Deer is 82%.

Rainfall

In December, the rain falls for 12.5 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In White Deer, during the entire year, the rain falls for 167.6 days and collects up to 30.83" (783mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 9.1 days. Throughout December, 3.43" (87mm) of snow is accumulated. In White Deer, during the entire year, snow falls for 47.2 days and aggregates up to 20.51" (521mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:49 pm EST.

Sunshine

In White Deer, the average sunshine in December is 4.1h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in White Deer. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

Is it cold in White Deer during December?

In December, in White Deer, the average high-temperature is 37.8°F (3.2°C), and the average low-temperature is 27.5°F (-2.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is estimated at 87.8°F (31°C).

What is the average humidity in December in White Deer?

In December, the average relative humidity is 82%.

How many days does it rain in December in White Deer?

In White Deer, during December, the rain falls for 12.5 days and regularly aggregates up to 2.32" (59mm) of precipitation.

How much does it snow in White Deer in December?

In December, in White Deer, Pennsylvania, it is snowing for 9.1 days. Throughout December, 3.43" (87mm) of snow is accumulated.

What is the month with the shortest days in White Deer?

The month with the shortest days in White Deer is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December in White Deer?

The average day length in December is 9h and 17min.

When is the sunrise / sunset in December in White Deer?

On the first day of December, sunrise is at 7:13 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:49 pm EST.

How long on average sun shines in December in White Deer?

In December, the average sunshine duration in White Deer, Pennsylvania, is 4.1h.

What is the month with the lowest UV index in White Deer?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in White Deer?

In December, the average daily maximum UV index in White Deer, Pennsylvania, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
White Deer, PA

Average temperature in December - White Deer, PA
  • Average high temperature in December: 37.8°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in December
White Deer, PA

Average pressure in December - White Deer, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
White Deer, PA

Average wind speed in December - White Deer, PA
  • Average wind speed in December: 7mph

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
White Deer, PA

Average humidity in December - White Deer, PA
  • Average humidity in December: 82%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are March and April (77%).

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Average rainfall in December
White Deer, PA

Average rainfall in December - White Deer, PA
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is November (2.01").

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Average rainfall days in December
White Deer, PA

Average rainfall days in December - White Deer, PA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (9.7 days).

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Average snowfall in December
White Deer, PA

Average snowfall in December - White Deer, PA
  • Average snowfall in December: 3.43"

The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
White Deer, PA

Average snowfall days in December - White Deer, PA
  • Average snowfall days in December: 9.1 days

The month with the highest number of snowfall days is February (13 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
White Deer, PA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

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Average sunshine days in December
White Deer, PA

Average sunshine days in December - White Deer, PA
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is November (16 days).
The month with the least sunshine days is February (9.3 days).

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Average UV index in December
White Deer, PA

Average UV index in December - White Deer, PA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
White Deer, PA

Average cloud cover in December - White Deer, PA
  • Average cloud cover in December: 57

The months with the most cloud cover are January, February and December (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
White Deer, PA

Average visibility in December - White Deer, PA
  • Average visibility in December: 5mi

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

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White Deer, Pennsylvania, USA

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