December weather forecast
Glenolden, PA

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Weather in December

The first month of the winter, December, is still a chilly month in Glenolden, Pennsylvania, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 32.7°F (0.4°C).

Temperature

Glenolden in December undergoes a slight reduction in the average high-temperature, shifting from November's cool 52.7°F (11.5°C) to a frosty 44.1°F (6.7°C). Glenolden, during December nights, observes an average temperature of 32.7°F (0.4°C).

Humidity

The months with the highest humidity are February, October and December, with an average relative humidity of 77%.

Rainfall

In Glenolden, in December, during 9.6 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Glenolden, during the entire year, the rain falls for 142 days and collects up to 24.41" (620mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Glenolden, during December, snow falls for 1.5 days and regularly aggregates up to 0.75" (19mm) of snow. Throughout the year, in Glenolden, there are 11.3 snowfall days, and 6.18" (157mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:46 pm EST.

Sunshine

In Glenolden, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

Is December cold?

The high-temperature, in December, in Glenolden, is 44.1°F (6.7°C), while the low-temperature averages to 32.7°F (0.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 91.4°F (33°C).

What are the most humid months?

February, October and December, with an average relative humidity of 77%, are most humid months.

What is the average humidity in December?

In Glenolden, Pennsylvania, the average relative humidity in December is 77%.

How many days does it rain in December?

In Glenolden, during December, the rain falls for 9.6 days and regularly aggregates up to 2.4" (61mm) of precipitation.

How much does it snow in December?

In Glenolden, during December, snow falls for 1.5 days and regularly aggregates up to 0.75" (19mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 24min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:46 pm EST.

How many hours of sunshine does Glenolden have in December?

The average sunshine duration in December is 5.1h.

When is the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in December?

In Glenolden, Pennsylvania, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
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
Glenolden, PA

Average temperature in December - Glenolden, PA
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in December: 32.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in December
Glenolden, PA

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

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Glenolden, PA

Average wind speed in December - Glenolden, PA
  • Average wind speed in December: 7.8mph

The windiest months (with the highest average wind speed) are February, March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Glenolden, PA

Average humidity in December - Glenolden, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).

Average rainfall in December
Glenolden, PA

Average rainfall in December - Glenolden, PA
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in December
Glenolden, PA

Average rainfall days in December - Glenolden, PA
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in December
Glenolden, PA

Average snowfall in December - Glenolden, PA
  • Average snowfall in December: 0.75"

The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Glenolden, PA

Average snowfall days in December - Glenolden, PA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Glenolden, PA

Average daylight in December / Average sunshine in December - Glenolden, 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: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Glenolden, PA

Average sunshine days in December - Glenolden, PA
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (12.1 days).

Average UV index in December
Glenolden, PA

Average UV index in December - Glenolden, PA
  • Average UV index in December: 2

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

Average cloud cover in December
Glenolden, PA

Average cloud cover in December - Glenolden, PA
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Glenolden, PA

Average visibility in December - Glenolden, PA
  • Average visibility in December: 6mi

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

Glenolden, Pennsylvania, USA

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