December weather forecast
Bala, PA

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Weather in December

The first month of the winter, December, is also a frosty month in Bala, Pennsylvania, with an average temperature varying between 32°F (0°C) and 43.2°F (6.2°C).

Temperature

A minor decrease in the average high-temperature is observed during December, shifting from a cool 52°F (11.1°C) in November to a chilly 43.2°F (6.2°C). The nighttime temperature, during December, averages of 32°F (0°C).

Humidity

In December, the average relative humidity in Bala is 77%.

Rainfall

In Bala, during December, the rain falls for 6.5 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Bala, during the entire year, the rain falls for 111.8 days and collects up to 9.69" (246mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Bala, Pennsylvania, during December, snow falls for 2.1 days and regularly aggregates up to 0.63" (16mm) of snow. In Bala, during the entire year, snow falls for 15.1 days and aggregates up to 3.66" (93mm) of snow.

Daylight

December has the shortest days of the year in Bala, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:45 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature during December is 43.2°F (6.2°C) and the low-temperature is 32°F (0°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 89.6°F (32°C).

What is the average humidity in December?

In Bala, the average relative humidity in December is 77%.

How much does it rain in December?

In Bala, in December, during 6.5 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

How much does it snow in December?

In December, it is snowing for 2.1 days. Throughout December, 0.63" (16mm) of snow is accumulated.

What is the month with the shortest days in Bala?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Bala have in December?

The average day length in December is 9h and 23min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:45 pm EST.

How many hours of sunshine does Bala have in December?

In December, the average sunshine duration is 4.9h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. 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
Bala, PA

Average temperature in December - Bala, PA
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in December
Bala, PA

Average pressure in December - Bala, 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
Bala, PA

Average wind speed in December - Bala, PA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Bala, PA

Average humidity in December - Bala, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

Average rainfall in December
Bala, PA

Average rainfall in December - Bala, PA
  • Average rainfall in December: 0.91"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in December
Bala, PA

Average rainfall days in December - Bala, PA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in December
Bala, PA

Average snowfall in December - Bala, PA
  • Average snowfall in December: 0.63"

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Bala, PA

Average snowfall days in December - Bala, PA
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Bala, 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 24min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Bala, PA

Average sunshine days in December - Bala, PA
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

Average UV index in December
Bala, PA

Average UV index in December - Bala, PA
  • Average UV index in December: 2

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

Average cloud cover in December
Bala, PA

Average cloud cover in December - Bala, PA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Bala, PA

Average visibility in December - Bala, PA
  • Average visibility in December: 6mi

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

Bala, Pennsylvania, USA

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