December weather forecast
Fall Brook, PA

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Weather in December

December, the first month of the winter in Fall Brook, is also an icy month, with an average temperature varying between 34.5°F (1.4°C) and 25.2°F (-3.8°C).

Temperature

Fall Brook's average high-temperature decreases in December, falling from a chilly 43.9°F (6.6°C) in November to a cold 34.5°F (1.4°C). In December, Fall Brook experiences an average nighttime temperature of 25.2°F (-3.8°C).

Humidity

The average relative humidity in December in Fall Brook is 85%.

Rainfall

In Fall Brook, during December, the rain falls for 8.9 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Fall Brook, during the entire year, the rain falls for 156.3 days and collects up to 29.25" (743mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Fall Brook, in December, during 11.8 snowfall days, 5.71" (145mm) of snow is typically accumulated. Throughout the year, there are 63.2 snowfall days, and 33.23" (844mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:34 am and sunset at 4:47 pm EST.

Sunshine

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

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily UV index of 1 turns into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In December, in Fall Brook, the average high-temperature is 34.5°F (1.4°C), and the average low-temperature is 25.2°F (-3.8°C).

What is the average humidity in December?

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

How many days does it rain in December?

In December, the rain falls for 8.9 days. Throughout December, 2.13" (54mm) of precipitation is accumulated.

How much does it snow in December?

In Fall Brook, during December, snow falls for 11.8 days and regularly aggregates up to 5.71" (145mm) 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 Fall Brook have in December?

In December, the average day length is 9h and 13min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:16 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:47 pm EST.

What are the months with the least sunshine?

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

How many hours of sunshine does Fall Brook have in December?

In Fall Brook, the average sunshine duration in December is 3.2h.

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.

What is the UV index reading in December?

In Fall Brook, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe 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
Fall Brook, PA

Average temperature in December - Fall Brook, PA
  • Average high temperature in December: 34.5°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 (28.4°F).

  • Average low temperature in December: 25.2°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

Average pressure in December
Fall Brook, PA

Average pressure in December - Fall 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
Fall Brook, PA

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

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Fall Brook, PA

Average humidity in December - Fall Brook, 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
Fall Brook, PA

Average rainfall in December - Fall Brook, PA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (1.73").

Average rainfall days in December
Fall Brook, PA

Average rainfall days in December - Fall Brook, PA
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is February (6.5 days).

Average snowfall in December
Fall Brook, PA

Average snowfall in December - Fall Brook, PA
  • Average snowfall in December: 5.71"

The month with the highest snowfall is February (7.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Fall Brook, PA

Average snowfall days in December - Fall Brook, PA
  • Average snowfall days in December: 11.8 days

The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Fall 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: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).

Average sunshine days in December
Fall Brook, PA

Average sunshine days in December - Fall Brook, PA
  • Average sunshine days in December: 13.6 days

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in December
Fall Brook, PA

Average UV index in December - Fall 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
Fall Brook, PA

Average cloud cover in December - Fall Brook, PA
  • Average cloud cover in December: 68

The months with the most cloud cover are January and December (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 39).

Average visibility in December
Fall Brook, PA

Average visibility in December - Fall Brook, 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).

Fall Brook, Pennsylvania, USA

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