December weather forecast
Scranton, PA

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These houses are set in a hilly spot and circled by trees full of the beauty of the fall foliage on a typical day in the Scranton region of Pennsylvania
These houses are set in a hilly spot and circled by trees full of the beauty of the fall foliage on a typical day in the Scranton region of Pennsylvania

Weather in December

Wrapping up the year in Scranton, December brings in the full force of winter with decreasing temperatures and increasing snowfall. In comparison to November, there is a clear increase in snowfall amounting to 4.21" (107mm). This significant jump transforms the city into a winter wonderland, setting the stage for the year-end holiday season. The wind speed and relative humidity rise marginally, contributing to the overall chilliness of the prevailing winter conditions. Hence, December encapsulates Scranton's weather cycle, finishing the year with a chilly yet festive climate.

Temperature

As November transitions into December, Scranton sees a drop in the average high-temperature, transitioning from a chilly 45.1°F (7.3°C) to a cold 35.6°F (2°C). During the month of December, the nighttime temperature falls to an average of 25.2°F (-3.8°C).

Humidity

February and December, with an average relative humidity of 85%, are the most humid months.

Rainfall

In Scranton, Pennsylvania, in December, it is raining for 8.1 days, with typically 1.54" (39mm) of accumulated precipitation. In Scranton, during the entire year, the rain falls for 139.9 days and collects up to 22.28" (566mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Scranton, in December, snow falls for 8.4 days, with typically accumulated 4.21" (107mm) of snow. In Scranton, during the entire year, snow falls for 48.4 days and aggregates up to 22.01" (559mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in Scranton, Pennsylvania.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:43 pm EST.

Sunshine

In December, the average sunshine is 3.6h.

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 minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.

Frequently asked questions

How cold is December?

The high-temperature, in December, in Scranton, is 35.6°F (2°C), while the low-temperature averages to 25.2°F (-3.8°C).

What are the most humid months?

The months with the highest humidity are February and December, with an average relative humidity of 85%.

What is the average humidity in December?

In Scranton, the average relative humidity in December is 85%.

How much does it rain in December?

In Scranton, in December, it is raining for 8.1 days, with typically 1.54" (39mm) of accumulated precipitation.

How much does it snow in December?

In Scranton, in December, snow falls for 8.4 days, with typically accumulated 4.21" (107mm) 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.

What is the average length of the day in December?

The average day length in December is 9h and 14min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:09 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:43 pm EST.

How many hours of sunshine does Scranton have in December?

The average sunshine duration in December is 3.6h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 1. A UV Index 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
Scranton, PA

Average temperature in December - Scranton, PA
  • Average high temperature in December: 35.6°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in December: 25.2°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in December
Scranton, PA

Average pressure in December - Scranton, 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 (29.94"Hg).

Average wind speed in December
Scranton, PA

Average wind speed in December - Scranton, PA
  • Average wind speed in December: 8mph

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

Average humidity in December
Scranton, PA

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

The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall in December
Scranton, PA

Average rainfall in December - Scranton, PA
  • Average rainfall in December: 1.54"

The wettest months (with the highest rainfall) are May and July (2.4").
The driest months (with the least rainfall) are January and September (1.38").

Average rainfall days in December
Scranton, PA

Average rainfall days in December - Scranton, PA
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in December
Scranton, PA

Average snowfall in December - Scranton, PA
  • Average snowfall in December: 4.21"

The month with the highest snowfall is March (5.08").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Scranton, PA

Average snowfall days in December - Scranton, PA
  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).

Average sunshine days in December
Scranton, PA

Average sunshine days in December - Scranton, PA
  • Average sunshine days in December: 17.4 days

The month with the most sunshine days is January (18.4 days).
The month with the least sunshine days is May (11 days).

Average UV index in December
Scranton, PA

Average UV index in December - Scranton, 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
Scranton, PA

Average cloud cover in December - Scranton, PA
  • Average cloud cover in December: 64

The months with the most cloud cover are February and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
Scranton, PA

Average visibility in December - Scranton, 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).

Scranton, Pennsylvania, USA

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