December weather forecast
Hillegass, PA

Weather in December

The first month of the winter, December, is still a cold month in Hillegass, Pennsylvania, with an average temperature varying between 30°F (-1.1°C) and 41.5°F (5.3°C).

Temperature

In Hillegass, the average high-temperature in December slightly decreases from a cool 50.4°F (10.2°C) in November to a cold 41.5°F (5.3°C). The average low-temperature, in Hillegass, is 30°F (-1.1°C).

Humidity

In December, the average relative humidity in Hillegass is 80%.

Rainfall

In Hillegass, during 10.8 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Hillegass, during the entire year, the rain falls for 155.5 days and collects up to 28.15" (715mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, in Hillegass, it is snowing for 4.1 days. Throughout December, 2.01" (51mm) of snow is accumulated. In Hillegass, during the entire year, snow falls for 27 days and aggregates up to 12.52" (318mm) of snow.

Daylight

With an average of 9h and 21min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:36 pm. On the last day of December, in Hillegass, sunrise is at 7:24 am and sunset at 4:45 pm EST.

Sunshine

In Hillegass, the average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Hillegass?

In December, the average relative humidity in Hillegass, Pennsylvania, is 80%.

How many days does it rain in December in Hillegass?

In Hillegass, Pennsylvania, in December, during 10.8 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

How much does it snow in Hillegass in December?

In Hillegass, in December, during 4.1 snowfall days, 2.01" (51mm) of snow is typically accumulated.

What is the month with the shortest days in Hillegass?

The month with the shortest days in Hillegass, Pennsylvania, is December, with an average of 9h and 21min of daylight.

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

In December, the average day length is 9h and 21min.

What time are sunrise and sunset in December in Hillegass?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:45 pm EST.

How many hours of sunshine does Hillegass have in December?

In December, the average sunshine duration in Hillegass, Pennsylvania, is 4.8h.

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

The months with the lowest UV index in Hillegass, 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 Hillegass?

In Hillegass, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents 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
Hillegass, PA

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

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Hillegass, PA

Average pressure in December - Hillegass, 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
Hillegass, PA

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

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
Hillegass, PA

Average humidity in December - Hillegass, PA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
Hillegass, PA

Average rainfall in December - Hillegass, PA
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days in December
Hillegass, PA

Average rainfall days in December - Hillegass, PA
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8 days).

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Average snowfall in December
Hillegass, PA

Average snowfall in December - Hillegass, PA
  • Average snowfall in December: 2.01"

The month with the highest snowfall is March (3.86").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Hillegass, PA

Average snowfall days in December - Hillegass, PA
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is January (8.5 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
Hillegass, PA

Average daylight in December / Average sunshine in December - Hillegass, PA
  • Average daylight in December: 9h and 21min

The month with the longest days is June (Average daylight: 15h and 1min).
The month with the shortest days is December (Average daylight: 9h and 21min).

  • Average sunshine in December: 4h and 48min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Hillegass, PA

Average sunshine days in December - Hillegass, PA
  • Average sunshine days in December: 16 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is April (12 days).

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Average UV index in December
Hillegass, PA

Average UV index in December - Hillegass, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June and July (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
Hillegass, PA

Average cloud cover in December - Hillegass, PA
  • Average cloud cover in December: 50

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Hillegass, PA

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

The months with the highest visibility are March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, May, September, October and December (5mi).

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