December weather forecast
Oak Summit, PA

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Weather in December

December, the first month of the winter in Oak Summit, is still a chilly month, with an average temperature fluctuating between 31.6°F (-0.2°C) and 42.8°F (6°C).

Temperature

As Oak Summit enters December, the average high-temperature decreases from the a fresh 52.2°F (11.2°C) of November to a chilly 42.8°F (6°C). Throughout December nights, Oak Summit experiences a consistent temperature average of 31.6°F (-0.2°C).

Humidity

February, October and December, with an average relative humidity of 78%, are the most humid months in Oak Summit.

Rainfall

In Oak Summit, during December, the rain falls for 7.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Oak Summit, Pennsylvania, during the entire year, the rain falls for 122.4 days and collects up to 12.68" (322mm) of precipitation.

Snowfall

Months with snowfall in Oak Summit are January through April, November and December. In December, in Oak Summit, Pennsylvania, it is snowing for 2.5 days. Throughout December, 0.71" (18mm) of snow is accumulated. In Oak Summit, during the entire year, snow falls for 16.3 days and aggregates up to 4.72" (120mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:45 pm EST.

Sunshine

The average sunshine in December in Oak Summit is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Oak Summit, Pennsylvania. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the UV index of 2 transforms into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

Is December cold in Oak Summit?

The high-temperature, in December, in Oak Summit, is 42.8°F (6°C), while the low-temperature averages to 31.6°F (-0.2°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 89.6°F (32°C).

What is the most humid month in Oak Summit?

The months with the highest humidity in Oak Summit are February, October and December, with an average relative humidity of 78%.

What is the average humidity in December in Oak Summit?

The average relative humidity in December is 78%.

How many days does it rain in December in Oak Summit?

In Oak Summit, Pennsylvania, in December, it is raining for 7.5 days, with typically 1.14" (29mm) of accumulated precipitation.

How much does it snow in Oak Summit in December?

In Oak Summit, in December, snow falls for 2.5 days, with typically accumulated 0.71" (18mm) of snow.

What is the month with the shortest days in Oak Summit?

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

How many hours of daylight does Oak Summit have in December?

In Oak Summit, Pennsylvania, the average day length in December is 9h and 23min.

When are sunrise and sunset in December in Oak Summit?

On the first day of December in Oak Summit, sunrise is at 7:04 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:45 pm EST.

How many hours of sunshine does Oak Summit have in December?

In December, the average sunshine duration in Oak Summit, Pennsylvania, is 5h.

What are the months with the lowest UV index in Oak Summit?

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

What is the UV index intensity in December in Oak Summit?

In Oak Summit, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Oak Summit, PA

Average temperature in December - Oak Summit, PA
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 31.6°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in December
Oak Summit, PA

Average pressure in December - Oak Summit, 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).

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Average wind speed in December
Oak Summit, PA

Average wind speed in December - Oak Summit, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in December
Oak Summit, PA

Average humidity in December - Oak Summit, PA
  • Average humidity in December: 78%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

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Average rainfall in December
Oak Summit, PA

Average rainfall in December - Oak Summit, PA
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is September (0.75").

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Average rainfall days in December
Oak Summit, PA

Average rainfall days in December - Oak Summit, PA
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (6.4 days).

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Average snowfall in December
Oak Summit, PA

Average snowfall in December - Oak Summit, PA
  • Average snowfall in December: 0.71"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Oak Summit, PA

Average snowfall days in December - Oak Summit, PA
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is January (5.1 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
Oak Summit, PA

Average daylight in December / Average sunshine in December - Oak Summit, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in December
Oak Summit, PA

Average sunshine days in December - Oak Summit, PA
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (14.4 days).

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Average UV index in December
Oak Summit, PA

Average UV index in December - Oak Summit, 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
Oak Summit, PA

Average cloud cover in December - Oak Summit, PA
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Oak Summit, PA

Average visibility in December - Oak Summit, 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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Oak Summit, Pennsylvania, USA

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