December weather forecast
Pen Argyl, PA

Weather in December

The first month of the winter, December, is still a cold month in Pen Argyl, Pennsylvania, with average temperature ranging between max 39°F (3.9°C) and min 27.5°F (-2.5°C).

Temperature

In Pen Argyl, the average high-temperature in December decreases, from a frosty 48.4°F (9.1°C) in November, to a cold 39°F (3.9°C). In Pen Argyl, in December, the average low-temperature is 27.5°F (-2.5°C).

Humidity

The average relative humidity in Pen Argyl is 81%.

Rainfall

In Pen Argyl, during December, the rain falls for 9.4 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Pen Argyl, during the entire year, the rain falls for 139.9 days and collects up to 19.88" (505mm) of precipitation.

Snowfall

Months with snowfall in Pen Argyl are January through May, October through December. In Pen Argyl, in December, snow falls for 4.1 days, with typically accumulated 2.32" (59mm) of snow. In Pen Argyl, during the entire year, snow falls for 24.7 days, and aggregates up to 10.94" (278mm) of snow.

Daylight

December has the shortest days of the year in Pen Argyl, with an average of 9.3h of daylight.

Sunshine

In Pen Argyl, Pennsylvania, the average sunshine in December is 4.7h.

UV index

December is the month with the lowest UV index in Pen Argyl, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 1 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Pen Argyl?

The average relative humidity in December in Pen Argyl, Pennsylvania, is 81%.

How much does it rain in Pen Argyl in December?

In December, in Pen Argyl, Pennsylvania, the rain falls for 9.4 days. Throughout December, 1.73" (44mm) of precipitation is accumulated.

How much does it snow in Pen Argyl in December?

In Pen Argyl, during December, snow falls for 4.1 days and regularly aggregates up to 2.32" (59mm) of snow.

What is the month with the shortest days in Pen Argyl?

With an average of 9.3h of daylight, December has the shortest days of the year.

How many hours of daylight does Pen Argyl have in December?

The average length of the day in December in Pen Argyl, Pennsylvania, is 9.3h.

How long on average sun shines in December in Pen Argyl?

In December, the average sunshine in Pen Argyl, Pennsylvania, is 4.7h.

When is the lowest UV index in Pen Argyl?

December is the month with the lowest UV index in Pen Argyl, Pennsylvania, with an average maximum UV index of 1.

What is the UV index intensity in December in Pen Argyl?

In Pen Argyl, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
Pen Argyl, PA

Average temperature in December - Pen Argyl, PA
  • Average high temperature in December: 39°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 (33.4°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
Pen Argyl, PA

Average pressure in December - Pen Argyl, PA
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in December
Pen Argyl, PA

Average wind speed in December - Pen Argyl, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Pen Argyl, PA

Average humidity in December - Pen Argyl, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in December
Pen Argyl, PA

Average rainfall in December - Pen Argyl, PA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is July (2.32").
The driest month (with the least rainfall) is September (1.02").

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Average rainfall days in December
Pen Argyl, PA

Average rainfall days in December - Pen Argyl, PA
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
Pen Argyl, PA

Average snowfall in December - Pen Argyl, PA
  • Average snowfall in December: 2.32"

The month with the highest snowfall is February (2.52").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Pen Argyl, PA

Average snowfall days in December - Pen Argyl, PA
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is February (6.8 days).
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
Pen Argyl, PA

Average daylight in December / Average sunshine in December - Pen Argyl, PA
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.7h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days in December
Pen Argyl, PA

Average sunshine days in December - Pen Argyl, PA
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is July (13 days).

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Average UV index in December
Pen Argyl, PA

Average UV index in December - Pen Argyl, PA
  • Average UV index in December: 1

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Pen Argyl, PA

Average cloud cover in December - Pen Argyl, PA
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in December
Pen Argyl, PA

Average visibility in December - Pen Argyl, PA
  • Average visibility in December: 5mi

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

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