December weather forecast
Loyalhanna, PA

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Weather in December

The first month of the winter, December, is also an icy month in Loyalhanna, Pennsylvania, with an average temperature fluctuating between 27.5°F (-2.5°C) and 38.8°F (3.8°C).

Temperature

The arrival of December indicates a decrease in the average high-temperature, moving from a chilly 48°F (8.9°C) in November to an icy 38.8°F (3.8°C). An average minimum temperature of 27.5°F (-2.5°C) is recorded during the month of December.

Humidity

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

Rainfall

In December, the rain falls for 11.5 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, in Loyalhanna, Pennsylvania, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Loyalhanna, in December, during 11.8 snowfall days, 4.17" (106mm) of snow is typically accumulated. In Loyalhanna, during the entire year, snow falls for 58.9 days and aggregates up to 18.62" (473mm) of snow.

Daylight

December has the shortest days of the year in Loyalhanna, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of December, in Loyalhanna, sunrise is at 7:40 am and sunset at 5:01 pm EST.

Sunshine

The average sunshine in December in Loyalhanna is 3.5h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Loyalhanna, Pennsylvania. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

Is December cold in Loyalhanna?

The high-temperature, in December, in Loyalhanna, is 38.8°F (3.8°C), while the low-temperature averages to 27.5°F (-2.5°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in December in Loyalhanna?

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

How many days does it rain in December in Loyalhanna?

In December, in Loyalhanna, Pennsylvania, the rain falls for 11.5 days. Throughout December, 2.2" (56mm) of precipitation is accumulated.

How many days does it snow in December in Loyalhanna?

In December, in Loyalhanna, it is snowing for 11.8 days. Throughout December, 4.17" (106mm) of snow is accumulated.

What is the month with the shortest days in Loyalhanna?

The month with the shortest days in Loyalhanna is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Loyalhanna have in December?

The average day length in December in Loyalhanna is 9h and 22min.

What time are sunrise and sunset in December in Loyalhanna?

On the first day of December in Loyalhanna, Pennsylvania, 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 5:01 pm EST.

How many hours of sunshine does Loyalhanna have in December?

In December, the average sunshine duration is 3.5h.

What is the month with the lowest UV index in Loyalhanna?

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

What is the UV index reading in December in Loyalhanna?

In Loyalhanna, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk 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
Loyalhanna, PA

Average temperature in December - Loyalhanna, PA
  • Average high temperature in December: 38.8°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 (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

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Average pressure in December
Loyalhanna, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Loyalhanna, PA

Average wind speed in December - Loyalhanna, PA
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Loyalhanna, PA

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

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).

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Average rainfall in December
Loyalhanna, PA

Average rainfall in December - Loyalhanna, PA
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").

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Average rainfall days in December
Loyalhanna, PA

Average rainfall days in December - Loyalhanna, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).

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Average snowfall in December
Loyalhanna, PA

Average snowfall in December - Loyalhanna, PA
  • Average snowfall in December: 4.17"

The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Loyalhanna, PA

Average snowfall days in December - Loyalhanna, PA
  • Average snowfall days in December: 11.8 days

The month with the highest number of snowfall days is January (17.6 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
Loyalhanna, PA

Average daylight in December / Average sunshine in December - Loyalhanna, 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: 3h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in December
Loyalhanna, PA

Average sunshine days in December - Loyalhanna, PA
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).

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Average UV index in December
Loyalhanna, PA

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

The months with the highest UV index are June and 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
Loyalhanna, PA

Average cloud cover in December - Loyalhanna, PA
  • Average cloud cover in December: 65

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Loyalhanna, PA

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

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

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Loyalhanna, Pennsylvania, USA

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