December weather forecast
Delaware Water Gap, PA

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Weather in December

The first month of the winter, December, is still a cold month in Delaware Water Gap, Pennsylvania, with an average temperature fluctuating between 38.5°F (3.6°C) and 27.3°F (-2.6°C).

Temperature

Delaware Water Gap's weather changes with the onset of December, slightly falling from a frosty 48.4°F (9.1°C) in November to a wintry 38.5°F (3.6°C). In Delaware Water Gap, December nights cool down to an average of 27.3°F (-2.6°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 82%.

Rainfall

In Delaware Water Gap, during December, the rain falls for 9.3 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Delaware Water Gap, during the entire year, the rain falls for 135.7 days and collects up to 23.74" (603mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Delaware Water Gap, in December, during 5.7 snowfall days, 3.35" (85mm) of snow is typically accumulated. In Delaware Water Gap, Pennsylvania, during the entire year, snow falls for 33.7 days and aggregates up to 16.65" (423mm) 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 7:06 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:42 pm EST.

Sunshine

In Delaware Water Gap, the average sunshine in December is 4.5h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

The high-temperature during December is 38.5°F (3.6°C) and the low-temperature is 27.3°F (-2.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 89.6°F (32°C).

What is the most humid month?

February and December, with an average relative humidity of 82%, are most humid months in Delaware Water Gap.

What is the average humidity in December?

In Delaware Water Gap, the average relative humidity in December is 82%.

How many days does it rain in December?

In Delaware Water Gap, during December, the rain falls for 9.3 days and regularly aggregates up to 2.13" (54mm) of precipitation.

How much does it snow in December?

In Delaware Water Gap, in December, snow falls for 5.7 days, with typically accumulated 3.35" (85mm) of snow.

What is the month with the shortest days in Delaware Water Gap?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 17min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:33 pm. On the last day of the month, in Delaware Water Gap, sunrise is at 7:25 am and sunset at 4:42 pm EST.

How many hours of sunshine does Delaware Water Gap have in December?

In December, the average sunshine duration is 4.5h.

When is the lowest UV index?

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

What is the UV index reading in December in Delaware Water Gap?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Delaware Water Gap, PA

Average temperature in December - Delaware Water Gap, PA
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Delaware Water Gap, PA

Average pressure in December - Delaware Water Gap, PA
  • Average pressure in December: 30.08"Hg

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

Average wind speed in December
Delaware Water Gap, PA

Average wind speed in December - Delaware Water Gap, PA
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in December
Delaware Water Gap, PA

Average humidity in December - Delaware Water Gap, PA
  • Average humidity in December: 82%

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

Average rainfall in December
Delaware Water Gap, PA

Average rainfall in December - Delaware Water Gap, PA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is September (1.22").

Average rainfall days in December
Delaware Water Gap, PA

Average rainfall days in December - Delaware Water Gap, PA
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in December
Delaware Water Gap, PA

Average snowfall in December - Delaware Water Gap, PA
  • Average snowfall in December: 3.35"

The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Delaware Water Gap, PA

Average snowfall days in December - Delaware Water Gap, PA
  • Average snowfall days in December: 5.7 days

The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Delaware Water Gap, PA

Average daylight in December / Average sunshine in December - Delaware Water Gap, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in December
Delaware Water Gap, PA

Average sunshine days in December - Delaware Water Gap, PA
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in December
Delaware Water Gap, PA

Average UV index in December - Delaware Water Gap, 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).

Average cloud cover in December
Delaware Water Gap, PA

Average cloud cover in December - Delaware Water Gap, PA
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December
Delaware Water Gap, PA

Average visibility in December - Delaware Water Gap, 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).

Delaware Water Gap, Pennsylvania, USA

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