December weather forecast
West Reading, PA

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Weather in December

December, the first month of the winter in West Reading, is also a wintry month, with temperature in the range of an average high of 40.6°F (4.8°C) and an average low of 29.7°F (-1.3°C).

Temperature

As November transitions into December, West Reading sees a drop in the average high-temperature, transitioning from a cool 50.2°F (10.1°C) to a wintry 40.6°F (4.8°C). West Reading observes an average nighttime temperature of 29.7°F (-1.3°C) during December.

Humidity

In West Reading, the average relative humidity in December is 80%.

Rainfall

In West Reading, in December, during 10.4 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In West Reading, during the entire year, the rain falls for 155.7 days and collects up to 30.83" (783mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In West Reading, in December, during 3.7 snowfall days, 1.5" (38mm) of snow is typically accumulated. In West Reading, during the entire year, snow falls for 21.1 days and aggregates up to 12.28" (312mm) of snow.

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 7:07 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:47 pm EST.

Sunshine

The average sunshine in December is 4.7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Frequently asked questions

Is it cold during December?

The average high-temperature, in December, in West Reading, is 40.6°F (4.8°C), while the average low-temperature is 29.7°F (-1.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in December in West Reading?

In West Reading, Pennsylvania, the average relative humidity in December is 80%.

How much does it rain in December?

In West Reading, during December, the rain falls for 10.4 days and regularly aggregates up to 2.44" (62mm) of precipitation.

How much does it snow in December?

In West Reading, in December, snow falls for 3.7 days, with typically accumulated 1.5" (38mm) of snow.

What is the month with the shortest days?

The month with the shortest days in West Reading is December, 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 21min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:47 pm EST.

How many hours of sunshine does West Reading have in December?

In West Reading, the average sunshine duration in December is 4.7h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
West Reading, PA

Average temperature in December - West Reading, PA
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in December
West Reading, PA

Average pressure in December - West Reading, PA
  • Average pressure in December: 30.1"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).

Average wind speed in December
West Reading, PA

Average wind speed in December - West Reading, PA
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
West Reading, PA

Average humidity in December - West Reading, PA
  • Average humidity in December: 80%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in December
West Reading, PA

Average rainfall in December - West Reading, PA
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is February (2.05").

Average rainfall days in December
West Reading, PA

Average rainfall days in December - West Reading, PA
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in December
West Reading, PA

Average snowfall in December - West Reading, PA
  • Average snowfall in December: 1.5"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
West Reading, PA

Average snowfall days in December - West Reading, PA
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
West Reading, PA

Average daylight in December / Average sunshine in December - West Reading, 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: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
West Reading, PA

Average sunshine days in December - West Reading, PA
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
West Reading, PA

Average UV index in December - West Reading, PA
  • Average UV index in December: 2

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

Average cloud cover in December
West Reading, PA

Average cloud cover in December - West Reading, PA
  • Average cloud cover in December: 50

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
West Reading, PA

Average visibility in December - West Reading, PA
  • Average visibility in December: 6mi

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

West Reading, Pennsylvania, USA

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