December weather forecast
Belmont Hills, PA

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Weather in December

December, the first month of the winter in Belmont Hills, is also a frosty month, with temperature in the range of an average low of 32°F (0°C) and an average high of 43.2°F (6.2°C).

Temperature

The shift from November to December includes a small decrease in the average high-temperature, from a cool 52°F (11.1°C) to a frosty 43.2°F (6.2°C). In Belmont Hills, December's nights observe an average temperature dip to a cold 32°F (0°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In December, the rain falls for 6.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Belmont Hills, 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 December, it is snowing for 2.1 days. Throughout December, 0.63" (16mm) of snow is accumulated. Throughout the year, in Belmont Hills, there are 15.1 snowfall days, and 3.66" (93mm) of snow is accumulated.

Daylight

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

Sunshine

In Belmont Hills, the average sunshine in December 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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

During December, Belmont Hills experiences an average high-temperature of 43.2°F (6.2°C) and a low-temperature of 32°F (0°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 77%.

How many days does it rain in December?

In Belmont Hills, during December, the rain falls for 6.5 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How many days does it snow in December?

In Belmont Hills, during December, snow falls for 2.1 days and regularly aggregates up to 0.63" (16mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Belmont Hills 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 long on average sun shines in December?

The average sunshine duration in December is 4.9h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Belmont Hills, the average daily maximum UV index in December is 2. A UV Index 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
Belmont Hills, PA

Average temperature in December - Belmont Hills, 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
Belmont Hills, PA

Average pressure in December - Belmont Hills, 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
Belmont Hills, PA

Average wind speed in December - Belmont Hills, 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
Belmont Hills, PA

Average humidity in December - Belmont Hills, 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
Belmont Hills, PA

Average rainfall in December - Belmont Hills, 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
Belmont Hills, PA

Average rainfall days in December - Belmont Hills, 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
Belmont Hills, PA

Average snowfall in December - Belmont Hills, 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
Belmont Hills, PA

Average snowfall days in December - Belmont Hills, 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
Belmont Hills, PA

Average daylight in December / Average sunshine in December - Belmont Hills, 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
Belmont Hills, PA

Average sunshine days in December - Belmont Hills, 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
Belmont Hills, PA

Average UV index in December - Belmont Hills, 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
Belmont Hills, PA

Average cloud cover in December - Belmont Hills, 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
Belmont Hills, PA

Average visibility in December - Belmont Hills, 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).

Belmont Hills, Pennsylvania, USA

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