December weather forecast
Potter Brook, PA

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Weather in December

The first month of the winter, December, is still a cold month in Potter Brook, Pennsylvania, with an average temperature varying between 24.1°F (-4.4°C) and 34.2°F (1.2°C).

Temperature

The average high-temperature drops in December, from November's chilly 43.7°F (6.5°C) to a wintry 34.2°F (1.2°C). Potter Brook experiences a mean temperature of 24.1°F (-4.4°C) during December nights.

Humidity

The average relative humidity in December in Potter Brook is 86%.

Rainfall

In December, the rain falls for 11.8 days. Throughout December, 2.64" (67mm) of precipitation is accumulated. In Potter Brook, during the entire year, the rain falls for 174 days and collects up to 30.83" (783mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Potter Brook, during December, snow falls for 18 days and regularly aggregates up to 7.95" (202mm) of snow. In Potter Brook, Pennsylvania, during the entire year, snow falls for 86.8 days and aggregates up to 41.54" (1055mm) of snow.

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 7:19 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:49 pm EST.

Sunshine

January and December, with an average of 2.9h of sunshine, are months with the least sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 1 leads to the following instructions:
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 harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The average high-temperature, in December, in Potter Brook, is 34.2°F (1.2°C), while the average low-temperature is 24.1°F (-4.4°C).

What is the average humidity in December?

The average relative humidity in December is 86%.

How much does it rain in December?

In Potter Brook, in December, during 11.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 18 days. Throughout December, 7.95" (202mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

How many hours of daylight does Potter Brook have in December?

The average day length in December is 9h and 11min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:19 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:49 pm EST.

What are the months with the least sunshine?

The months with the least sunshine are January and December, with an average of 2.9h of sunshine.

How long on average sun shines in December?

In Potter Brook, the average sunshine duration in December is 2.9h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
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
Potter Brook, PA

Average temperature in December - Potter Brook, PA
  • Average high temperature in December: 34.2°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in December
Potter Brook, PA

Average pressure in December - Potter Brook, 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).

Average wind speed in December
Potter Brook, PA

Average wind speed in December - Potter Brook, 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 (5.7mph).

Average humidity in December
Potter Brook, PA

Average humidity in December - Potter Brook, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are June and July (78%).

Average rainfall in December
Potter Brook, PA

Average rainfall in December - Potter Brook, PA
  • Average rainfall in December: 2.64"

The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in December
Potter Brook, PA

Average rainfall days in December - Potter Brook, PA
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.9 days).

Average snowfall in December
Potter Brook, PA

Average snowfall in December - Potter Brook, PA
  • Average snowfall in December: 7.95"

The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Potter Brook, PA

Average snowfall days in December - Potter Brook, PA
  • Average snowfall days in December: 18 days

The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Potter Brook, PA

Average daylight in December / Average sunshine in December - Potter Brook, 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: 2h and 5min

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

Average sunshine days in December
Potter Brook, PA

Average sunshine days in December - Potter Brook, PA
  • Average sunshine days in December: 7 days

The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (5.9 days).

Average UV index in December
Potter Brook, PA

Average UV index in December - Potter Brook, 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
Potter Brook, PA

Average cloud cover in December - Potter Brook, PA
  • Average cloud cover in December: 71

The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 41).

Average visibility in December
Potter Brook, PA

Average visibility in December - Potter Brook, PA
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).

Potter Brook, Pennsylvania, USA

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