December weather forecast
Chester Heights, PA

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Weather in December

December, the first month of the winter in Chester Heights, is still a chilly month, with an average temperature varying between 43.5°F (6.4°C) and 32.5°F (0.3°C).

Temperature

The onset of December entails a subtle temperature shift, as the average high-temperature eases from a cool 52.2°F (11.2°C) in November to a frosty 43.5°F (6.4°C). The low-temperature average for Chester Heights during December stands at a wintry 32.5°F (0.3°C).

Humidity

In Chester Heights, the average relative humidity in December is 77%.

Rainfall

In Chester Heights, in December, it is raining for 11.1 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 166.6 rainfall days, and 35.59" (904mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 3.4 days. Throughout December, 1.61" (41mm) of snow is accumulated. In Chester Heights, during the entire year, snow falls for 22 days and aggregates up to 11.81" (300mm) 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 7:04 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:47 pm EST.

Sunshine

In Chester Heights, the average sunshine in December is 5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. 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. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

How cold is December?

The average high-temperature and low-temperature in Chester Heights during December are 43.5°F (6.4°C) and 32.5°F (0.3°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 77%.

How many days does it rain in December?

In Chester Heights, Pennsylvania, during December, the rain falls for 11.1 days and regularly aggregates up to 3.31" (84mm) of precipitation.

How much does it snow in December?

In Chester Heights, Pennsylvania, in December, snow falls for 3.4 days, with typically accumulated 1.61" (41mm) 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.

How many hours of daylight does Chester Heights have in December?

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

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:47 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 5h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Chester Heights, PA

Average temperature in December - Chester Heights, PA
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 32.5°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 (25.3°F).

Average pressure in December
Chester Heights, PA

Average pressure in December - Chester Heights, PA
  • Average pressure in December: 30.1"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
Chester Heights, PA

Average wind speed in December - Chester Heights, PA
  • Average wind speed in December: 8mph

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Chester Heights, PA

Average humidity in December - Chester Heights, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in December
Chester Heights, PA

Average rainfall in December - Chester Heights, PA
  • Average rainfall in December: 3.31"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").

Average rainfall days in December
Chester Heights, PA

Average rainfall days in December - Chester Heights, PA
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in December
Chester Heights, PA

Average snowfall in December - Chester Heights, PA
  • Average snowfall in December: 1.61"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Chester Heights, PA

Average snowfall days in December - Chester Heights, PA
  • Average snowfall days in December: 3.4 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Chester Heights, PA

Average daylight in December / Average sunshine in December - Chester Heights, 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 0min

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 48min).

Average sunshine days in December
Chester Heights, PA

Average sunshine days in December - Chester Heights, PA
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (10 days).

Average UV index in December
Chester Heights, PA

Average UV index in December - Chester Heights, 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
Chester Heights, PA

Average cloud cover in December - Chester Heights, PA
  • Average cloud cover in December: 47

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Chester Heights, PA

Average visibility in December - Chester Heights, PA
  • Average visibility in December: 6mi

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

Chester Heights, Pennsylvania, USA

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