December weather forecast
Belleville, PA

Share

Weather in December

The first month of the winter, December, is also an icy month in Belleville, Pennsylvania, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 39°F (3.9°C).

Temperature

Observing a mild shift, the average high-temperature during December reduces from November's chilly 48.4°F (9.1°C) to a wintry 39°F (3.9°C). Belleville reports an average low-temperature of 27.5°F (-2.5°C) during the nights of December.

Humidity

The average relative humidity in December is 81%.

Rainfall

In Belleville, Pennsylvania, in December, during 10.5 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 162 rainfall days, and 28.86" (733mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Belleville, in December, snow falls for 6 days, with typically accumulated 2.76" (70mm) of snow. In Belleville, during the entire year, snow falls for 35.2 days and aggregates up to 16.42" (417mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Belleville.
On the first day of December, sunrise is at 7:15 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:54 pm EST.

Sunshine

In Belleville, the average sunshine in December is 4.1h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 2 during December leads to these advisories:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

Is it cold during December?

The average high-temperature and low-temperature during December are 39°F (3.9°C) and 27.5°F (-2.5°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in December?

In Belleville, the average relative humidity in December is 81%.

How many days does it rain in December?

In Belleville, in December, it is raining for 10.5 days, with typically 2.17" (55mm) of accumulated precipitation.

How much does it snow in December?

In Belleville, during December, snow falls for 6 days and regularly aggregates up to 2.76" (70mm) 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.

What is the average length of the day in December?

The average day length in December is 9h and 20min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:15 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:54 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.1h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Belleville, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Belleville, PA

Average temperature in December - Belleville, PA
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in December
Belleville, PA

Average pressure in December - Belleville, PA
  • Average pressure in December: 30.1"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
Belleville, PA

Average wind speed in December - Belleville, PA
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in December
Belleville, PA

Average humidity in December - Belleville, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).

Average rainfall in December
Belleville, PA

Average rainfall in December - Belleville, PA
  • Average rainfall in December: 2.17"

The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January and November (1.85").

Average rainfall days in December
Belleville, PA

Average rainfall days in December - Belleville, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.8 days).

Average snowfall in December
Belleville, PA

Average snowfall in December - Belleville, PA
  • Average snowfall in December: 2.76"

The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Belleville, PA

Average snowfall days in December - Belleville, PA
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Belleville, 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in December
Belleville, PA

Average sunshine days in December - Belleville, PA
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.4 days).

Average UV index in December
Belleville, PA

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

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

Average cloud cover in December
Belleville, PA

Average cloud cover in December - Belleville, PA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in December
Belleville, PA

Average visibility in December - Belleville, 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).

Belleville, Pennsylvania, USA

Weather forecast for your location

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