December weather forecast
Reading, PA

This beautiful and colorful pagoda located up on Mt. Penn is a beautiful spot to enjoy sweeping views of the scenic Reading City below, in Pennsylvania
This beautiful and colorful pagoda located up on Mt. Penn is a beautiful spot to enjoy sweeping views of the scenic Reading City below, in Pennsylvania

Weather in December

The first month of the winter, December, is also a wintry month in Reading, Pennsylvania, with an average temperature ranging between max 40.6°F (4.8°C) and min 29.7°F (-1.3°C).

Temperature

In Reading, the average high-temperature in December decreases from a cool 50.2°F (10.1°C) in November to a cold 40.6°F (4.8°C). In December, in Reading, Pennsylvania, the average low-temperature is 29.7°F (-1.3°C).

Humidity

In December, the average relative humidity is 80%.

Rainfall

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

Snowfall

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

Daylight

December has the shortest days of the year in Reading, with an average of 9h and 21min of daylight.
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.

Sunshine

In December, the average sunshine is 4.7h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Reading?

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

What is the average humidity in December in Reading?

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

How many days does it rain in December in Reading?

In December, the rain falls for 10.4 days. Throughout December, 2.44" (62mm) of precipitation is accumulated.

How many days does it snow in December in Reading?

In Reading, Pennsylvania, in December, during 3.7 snowfall days, 1.5" (38mm) of snow is typically accumulated.

What is the month with the shortest days in Reading?

With an average of 9h and 21min of daylight, December has the shortest days of the year in Reading.

What is the average length of the day in December in Reading?

In December, the average day length in Reading, Pennsylvania, is 9h and 21min.

What time are sunrise and sunset in December in Reading?

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

How long on average sun shines in December in Reading?

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

What are the months with the lowest UV index in Reading?

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

What is the UV index intensity in December in Reading?

In December, the average daily maximum UV index in Reading is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe 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
Reading, PA

Average temperature in December - 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).

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Average pressure in December
Reading, PA

Average pressure in December - 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).

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Average wind speed in December
Reading, PA

Average wind speed in December - 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).

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Average humidity in December
Reading, PA

Average humidity in December - 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%).

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Average rainfall in December
Reading, PA

Average rainfall in December - 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").

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Average rainfall days in December
Reading, PA

Average rainfall days in December - 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).

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Average snowfall in December
Reading, PA

Average snowfall in December - 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").

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Average snowfall days in December
Reading, PA

Average snowfall days in December - 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).

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

Average daylight in December / Average sunshine in December - Reading, PA
  • Average daylight in December: 9h and 21min

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 21min).

  • Average sunshine in December: 4h and 42min

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).

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Average sunshine days in December
Reading, PA

Average sunshine days in December - 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).

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Average UV index in December
Reading, PA

Average UV index in December - 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).

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Average cloud cover in December
Reading, PA

Average cloud cover in December - 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).

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Average visibility in December
Reading, PA

Average visibility in December - 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).

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