December weather forecast
Barlow Heights, PA

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Weather in December

The first month of the winter, December, is also an icy month in Barlow Heights, Pennsylvania, with an average temperature fluctuating between 30.2°F (-1°C) and 41.5°F (5.3°C).

Temperature

December shows a mild decline in the average high-temperature, falling from November's fresh 50.7°F (10.4°C) to a cold 41.5°F (5.3°C). An average low-temperature of 30.2°F (-1°C) is observed during the December nights.

Humidity

In Barlow Heights, the average relative humidity in December is 79%.

Rainfall

In December, in Barlow Heights, the rain falls for 9.5 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Barlow Heights, Pennsylvania, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In Barlow Heights, in December, snow falls for 2.7 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, in Barlow Heights, there are 19.1 snowfall days, and 11.54" (293mm) 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 December in Barlow Heights, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:46 pm EST.

Sunshine

The average sunshine in December in Barlow Heights, Pennsylvania, is 4.9h.

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 estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

How cold does it get in Barlow Heights in December?

An average high-temperature, in December, in Barlow Heights, is 41.5°F (5.3°C) and the average low-temperature is 30.2°F (-1°C). 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 evaluated at 87.8°F (31°C).

What is the average humidity in December in Barlow Heights?

The average relative humidity in December in Barlow Heights is 79%.

How many days does it rain in December in Barlow Heights?

In Barlow Heights, in December, it is raining for 9.5 days, with typically 2.32" (59mm) of accumulated precipitation.

How much does it snow in Barlow Heights in December?

In Barlow Heights, in December, snow falls for 2.7 days, with typically accumulated 1.89" (48mm) of snow.

What is the month with the shortest days in Barlow Heights?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Barlow Heights.

What is the average length of the day in December in Barlow Heights?

In Barlow Heights, Pennsylvania, the average day length in December is 9h and 22min.

When are sunrise and sunset in December in Barlow Heights?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:46 pm EST.

How many hours of sunshine does Barlow Heights have in December?

In Barlow Heights, Pennsylvania, the average sunshine duration in December is 4.9h.

What are the months with the lowest UV index in Barlow Heights?

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

How high is the UV index in December in Barlow Heights?

In Barlow Heights, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Barlow Heights, PA

Average temperature in December - Barlow Heights, PA
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in December
Barlow Heights, PA

Average pressure in December - Barlow 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).

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Average wind speed in December
Barlow Heights, PA

Average wind speed in December - Barlow Heights, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
Barlow Heights, PA

Average humidity in December - Barlow Heights, PA
  • Average humidity in December: 79%

The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
Barlow Heights, PA

Average rainfall in December - Barlow Heights, PA
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Barlow Heights, PA

Average rainfall days in December - Barlow Heights, PA
  • Average rainfall days in December: 9.5 days

The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
Barlow Heights, PA

Average snowfall in December - Barlow Heights, PA
  • Average snowfall in December: 1.89"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Barlow Heights, PA

Average snowfall days in December - Barlow Heights, PA
  • Average snowfall days in December: 2.7 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Barlow 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in December
Barlow Heights, PA

Average sunshine days in December - Barlow Heights, PA
  • Average sunshine days in December: 19.4 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in December
Barlow Heights, PA

Average UV index in December - Barlow 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, March, November and December (UV index 2).

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Average cloud cover in December
Barlow Heights, PA

Average cloud cover in December - Barlow Heights, PA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Barlow Heights, PA

Average visibility in December - Barlow 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).

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Barlow Heights, Pennsylvania, USA

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