December weather forecast
Brush Valley, PA

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Weather in December

December, the first month of the winter in Brush Valley, is also a wintry month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 37.9°F (3.3°C).

Temperature

The onset of December comes with a shift in the average high-temperature, falling from a chilly 47.5°F (8.6°C) in November to an icy 37.9°F (3.3°C). Brush Valley's temperature lowers to a mean of 27.1°F (-2.7°C) during the nights in December.

Humidity

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

Rainfall

In December, the rain falls for 11.5 days. Throughout December, 1.97" (50mm) of precipitation is accumulated. In Brush Valley, during the entire year, the rain falls for 162.4 days and collects up to 23.43" (595mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, in Brush Valley, it is snowing for 12.6 days. Throughout December, 4.41" (112mm) of snow is accumulated. Throughout the year, there are 62.7 snowfall days, and 21.3" (541mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:59 pm EST.

Sunshine

The average sunshine in December is 3.3h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 1 during December leads to these instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

December temperatures vary between a high-temperature of 37.9°F (3.3°C) and a low-temperature of 27.1°F (-2.7°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 85%.

How much does it rain in December?

In Brush Valley, during December, the rain falls for 11.5 days and regularly aggregates up to 1.97" (50mm) of precipitation.

How much does it snow in December?

In Brush Valley, during December, snow falls for 12.6 days and regularly aggregates up to 4.41" (112mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Brush Valley have in December?

In December, the average day length in Brush Valley is 9h and 20min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:59 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 3.3h.

What is the month with the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 1.

How high is the UV index in December?

In Brush Valley, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Brush Valley, PA

Average temperature in December - Brush Valley, PA
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 27.1°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

Average pressure in December
Brush Valley, PA

Average pressure in December - Brush Valley, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Brush Valley, PA

Average wind speed in December - Brush Valley, 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 (5mph).

Average humidity in December
Brush Valley, PA

Average humidity in December - Brush Valley, PA
  • Average humidity in December: 85%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).

Average rainfall in December
Brush Valley, PA

Average rainfall in December - Brush Valley, PA
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is November (1.3").

Average rainfall days in December
Brush Valley, PA

Average rainfall days in December - Brush Valley, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in December
Brush Valley, PA

Average snowfall in December - Brush Valley, PA
  • Average snowfall in December: 4.41"

The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Brush Valley, PA

Average snowfall days in December - Brush Valley, PA
  • Average snowfall days in December: 12.6 days

The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Brush Valley, PA

Average daylight in December / Average sunshine in December - Brush Valley, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 3h and 2min

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

Average sunshine days in December
Brush Valley, PA

Average sunshine days in December - Brush Valley, PA
  • Average sunshine days in December: 10.1 days

The month with the most sunshine days is September (14.8 days).
The months with the least sunshine days are January and February (7.8 days).

Average UV index in December
Brush Valley, PA

Average UV index in December - Brush Valley, PA
  • Average UV index in December: 1

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

Average cloud cover in December
Brush Valley, PA

Average cloud cover in December - Brush Valley, PA
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Brush Valley, PA

Average visibility in December - Brush Valley, PA
  • Average visibility in December: 5mi

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

Brush Valley, Pennsylvania, USA

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