December weather forecast
Gibson, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Gibson, Pennsylvania, with an average temperature ranging between max 34.7°F (1.5°C) and min 24.4°F (-4.2°C).

Temperature

Gibson's progression into December involves a drop in the average high-temperature, receding from a chilly 44.2°F (6.8°C) in November to a cold 34.7°F (1.5°C). In Gibson, in December, the average low-temperature is a freezing cold 24.4°F (-4.2°C).

Humidity

The average relative humidity in December is 85%.

Rainfall

In Gibson, during December, the rain falls for 10.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Gibson, during the entire year, the rain falls for 152.2 days and collects up to 23.94" (608mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Gibson, during December, snow falls for 13.7 days and regularly aggregates up to 5.43" (138mm) of snow. Throughout the year, there are 71.7 snowfall days, and 26.81" (681mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:11 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:41 pm EST.

Sunshine

The months with the least sunshine are February and December, with an average of 3.2h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 1 in December translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. When the Sun is at its strongest around midday, find shade and limit exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Frequently asked questions

How cold is December?

In Gibson, 34.7°F (1.5°C) is the average high-temperature and 24.4°F (-4.2°C) is the average low-temperature during December.

What is the average humidity in December?

The average relative humidity in December is 85%.

How much does it rain in December?

In Gibson, during December, the rain falls for 10.7 days and regularly aggregates up to 1.73" (44mm) of precipitation.

How many days does it snow in December?

In Gibson, in December, snow falls for 13.7 days, with typically accumulated 5.43" (138mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

How many hours of daylight does Gibson have in December?

The average day length in December is 9h and 12min.

What time are sunrise and sunset in December in Gibson?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:41 pm EST.

What is the month with the least sunshine?

The months with the least sunshine are February and December, with an average of 3.2h of sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 3.2h.

When is the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index intensity in December?

In Gibson, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes 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
Gibson, PA

Average temperature in December - Gibson, PA
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in December: 24.4°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Gibson, PA

Average pressure in December - Gibson, PA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Gibson, PA

Average wind speed in December - Gibson, PA
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Gibson, PA

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

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).

Average rainfall in December
Gibson, PA

Average rainfall in December - Gibson, PA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is January (1.54").

Average rainfall days in December
Gibson, PA

Average rainfall days in December - Gibson, PA
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in December
Gibson, PA

Average snowfall in December - Gibson, PA
  • Average snowfall in December: 5.43"

The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Gibson, PA

Average snowfall days in December - Gibson, PA
  • Average snowfall days in December: 13.7 days

The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Gibson, PA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are February and December (Average sunshine: 3h and 12min).

Average sunshine days in December
Gibson, PA

Average sunshine days in December - Gibson, PA
  • Average sunshine days in December: 10.1 days

The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (9.8 days).

Average UV index in December
Gibson, PA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Gibson, PA

Average cloud cover in December - Gibson, PA
  • Average cloud cover in December: 68

The months with the most cloud cover are January, February and December (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
Gibson, PA

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

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

Gibson, Pennsylvania, USA

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