December weather forecast
Blairsville, PA

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Weather in December

December, the first month of the winter in Blairsville, is also a wintry month, with an average temperature fluctuating between 27°F (-2.8°C) and 38.3°F (3.5°C).

Temperature

Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 47.8°F (8.8°C) in November to a wintry 38.3°F (3.5°C). Throughout December, the temperature falls to an average low of 27°F (-2.8°C).

Humidity

The average relative humidity in December is 85%.

Rainfall

In Blairsville, in December, during 12.5 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 183.4 rainfall days, and 33.5" (851mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 13.5 days. Throughout December, 6.22" (158mm) of snow is accumulated. In Blairsville, during the entire year, snow falls for 64.7 days and aggregates up to 29.06" (738mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:00 pm EST.

Sunshine

The average sunshine in December is 3.3h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

In Blairsville, in December, the average high-temperature is 38.3°F (3.5°C), and the average low-temperature is 27°F (-2.8°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 85%.

How many days does it rain in December?

In Blairsville, in December, it is raining for 12.5 days, with typically 3.03" (77mm) of accumulated precipitation.

How many days does it snow in December?

In Blairsville, during December, snow falls for 13.5 days and regularly aggregates up to 6.22" (158mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 20min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:00 pm EST.

How long on average sun shines in December in Blairsville?

The average sunshine duration in December is 3.3h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat 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
Blairsville, PA

Average temperature in December - Blairsville, PA
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in December: 27°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

Average pressure in December
Blairsville, PA

Average pressure in December - Blairsville, 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).

Average wind speed in December
Blairsville, PA

Average wind speed in December - Blairsville, PA
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in December
Blairsville, PA

Average humidity in December - Blairsville, PA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in December
Blairsville, PA

Average rainfall in December - Blairsville, PA
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is November (1.97").

Average rainfall days in December
Blairsville, PA

Average rainfall days in December - Blairsville, PA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is January (10.3 days).

Average snowfall in December
Blairsville, PA

Average snowfall in December - Blairsville, PA
  • Average snowfall in December: 6.22"

The month with the highest snowfall is January (7.48").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Blairsville, PA

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

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Blairsville, 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 2min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in December
Blairsville, PA

Average sunshine days in December - Blairsville, PA
  • Average sunshine days in December: 8.6 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is January (6.1 days).

Average UV index in December
Blairsville, PA

Average UV index in December - Blairsville, 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).

Average cloud cover in December
Blairsville, PA

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

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
Blairsville, PA

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

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

Blairsville, Pennsylvania, USA

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