December weather forecast
Blue Ridge Summit, PA

Share

Weather in December

December, the first month of the winter in Blue Ridge Summit, is also an icy month, with an average temperature ranging between min 29.1°F (-1.6°C) and max 41.2°F (5.1°C).

Temperature

Blue Ridge Summit, Pennsylvania, in December undergoes a mild reduction in the average high-temperature, shifting from November's fresh 50.2°F (10.1°C) to a wintry 41.2°F (5.1°C). December nights are marked by an average temperature drop to a subzero cold 29.1°F (-1.6°C).

Humidity

In Blue Ridge Summit, Pennsylvania, the average relative humidity in December is 79%.

Rainfall

In Blue Ridge Summit, in December, it is raining for 10.5 days, with typically 2.4" (61mm) of accumulated precipitation. In Blue Ridge Summit, Pennsylvania, during the entire year, the rain falls for 158.5 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Blue Ridge Summit, in December, during 6.1 snowfall days, 2.99" (76mm) of snow is typically accumulated. In Blue Ridge Summit, during the entire year, snow falls for 33 days and aggregates up to 22.44" (570mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:55 pm EST.

Sunshine

In Blue Ridge Summit, the average sunshine in December is 4.7h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 in December translates into these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

During December, Blue Ridge Summit experiences an average high-temperature of 41.2°F (5.1°C) and a low-temperature of 29.1°F (-1.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 79%.

How much does it rain in December?

In December, the rain falls for 10.5 days. Throughout December, 2.4" (61mm) of precipitation is accumulated.

How many days does it snow in December?

In Blue Ridge Summit, during December, snow falls for 6.1 days and regularly aggregates up to 2.99" (76mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

How many hours of daylight does Blue Ridge Summit have in December?

The average day length in December is 9h and 25min.

When is the sunrise / sunset in December in Blue Ridge Summit?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:55 pm EST.

How many hours of sunshine does Blue Ridge Summit have in December?

In Blue Ridge Summit, the average sunshine duration in December is 4.7h.

What are the months with the lowest UV index in Blue Ridge Summit?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

In Blue Ridge Summit, Pennsylvania, the average daily maximum UV index in December is 2. 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
Blue Ridge Summit, PA

Average temperature in December - Blue Ridge Summit, PA
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in December: 29.1°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in December
Blue Ridge Summit, PA

Average pressure in December - Blue Ridge Summit, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Blue Ridge Summit, PA

Average wind speed in December - Blue Ridge Summit, PA
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in December
Blue Ridge Summit, PA

Average humidity in December - Blue Ridge Summit, PA
  • Average humidity in December: 79%

The month with the highest relative humidity is October (80%).
The month with the lowest relative humidity is July (75%).

Average rainfall in December
Blue Ridge Summit, PA

Average rainfall in December - Blue Ridge Summit, PA
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in December
Blue Ridge Summit, PA

Average rainfall days in December - Blue Ridge Summit, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in December
Blue Ridge Summit, PA

Average snowfall in December - Blue Ridge Summit, PA
  • Average snowfall in December: 2.99"

The month with the highest snowfall is January (6.81").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Blue Ridge Summit, PA

Average snowfall days in December - Blue Ridge Summit, PA
  • Average snowfall days in December: 6.1 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Blue Ridge Summit, PA

Average daylight in December / Average sunshine in December - Blue Ridge Summit, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in December
Blue Ridge Summit, PA

Average sunshine days in December - Blue Ridge Summit, PA
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in December
Blue Ridge Summit, PA

Average UV index in December - Blue Ridge Summit, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Blue Ridge Summit, PA

Average cloud cover in December - Blue Ridge Summit, PA
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Blue Ridge Summit, PA

Average visibility in December - Blue Ridge Summit, PA
  • Average visibility in December: 5mi

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

Blue Ridge Summit, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location