December weather forecast
Tarentum, PA

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Weather in December

December, the first month of the winter in Tarentum, is also an icy month, with an average temperature varying between 38.7°F (3.7°C) and 27.5°F (-2.5°C).

Temperature

In December, the average high-temperature decreases from a frosty 48.4°F (9.1°C) in November to an icy 38.7°F (3.7°C). The month of December records an average low-temperature of 27.5°F (-2.5°C).

Humidity

The average relative humidity in December is 84%.

Rainfall

In Tarentum, in December, during 13.7 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. Throughout the year, in Tarentum, there are 185.5 rainfall days, and 35.59" (904mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Tarentum, Pennsylvania, in December, snow falls for 13.5 days, with typically accumulated 4.72" (120mm) of snow. Throughout the year, in Tarentum, Pennsylvania, there are 63.1 snowfall days, and 25.12" (638mm) of snow is accumulated.

Daylight

The month with the shortest days in Tarentum is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:24 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:02 pm EST.

Sunshine

In December, the average sunshine is 3.1h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

How cold does it get in Tarentum in December?

The high-temperature, in December, in Tarentum, is 38.7°F (3.7°C), while the low-temperature averages to 27.5°F (-2.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 86°F (30°C).

What is the average humidity in December in Tarentum?

In Tarentum, the average relative humidity in December is 84%.

How many days does it rain in December in Tarentum?

In Tarentum, in December, it is raining for 13.7 days, with typically 2.99" (76mm) of accumulated precipitation.

How many days does it snow in December in Tarentum?

In Tarentum, Pennsylvania, during December, snow falls for 13.5 days and regularly aggregates up to 4.72" (120mm) of snow.

What is the month with the shortest days in Tarentum?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

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

In December, the average day length in Tarentum, Pennsylvania, is 9h and 20min.

When are sunrise and sunset in December in Tarentum?

On the first day of December in Tarentum, sunrise is at 7:24 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:02 pm EST.

How long on average sun shines in December in Tarentum?

In Tarentum, Pennsylvania, the average sunshine duration in December is 3.1h.

When is the lowest UV index in Tarentum?

With an average maximum UV index of 1, December is the month with the lowest UV index in Tarentum, Pennsylvania.

How high is the UV index in December in Tarentum?

In December, the average daily maximum UV index in Tarentum, Pennsylvania, is 1. 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
Tarentum, PA

Average temperature in December - Tarentum, PA
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in December
Tarentum, PA

Average pressure in December - Tarentum, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Tarentum, PA

Average wind speed in December - Tarentum, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Tarentum, PA

Average humidity in December - Tarentum, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).

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Average rainfall in December
Tarentum, PA

Average rainfall in December - Tarentum, PA
  • Average rainfall in December: 2.99"

The wettest months (with the highest rainfall) are April and May (3.66").
The driest month (with the least rainfall) is November (2.2").

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Average rainfall days in December
Tarentum, PA

Average rainfall days in December - Tarentum, PA
  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is January (11.1 days).

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Average snowfall in December
Tarentum, PA

Average snowfall in December - Tarentum, PA
  • Average snowfall in December: 4.72"

The month with the highest snowfall is January (6.73").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Tarentum, PA

Average snowfall days in December - Tarentum, PA
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is January (18 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
Tarentum, PA

Average daylight in December / Average sunshine in December - Tarentum, 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 18min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in December
Tarentum, PA

Average sunshine days in December - Tarentum, PA
  • Average sunshine days in December: 9 days

The month with the most sunshine days is November (14.8 days).
The month with the least sunshine days is January (7.3 days).

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Average UV index in December
Tarentum, PA

Average UV index in December - Tarentum, PA
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Tarentum, PA

Average cloud cover in December - Tarentum, PA
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
Tarentum, PA

Average visibility in December - Tarentum, PA
  • Average visibility in December: 5mi

The months with the highest visibility are April and August (6mi).
The months with the lowest visibility are January and February (4mi).

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Tarentum, Pennsylvania, USA

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