December weather forecast
West Newton, PA

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Weather in December

The first month of the winter, December, is also an icy month in West Newton, Pennsylvania, with an average temperature varying between 28.4°F (-2°C) and 39.9°F (4.4°C).

Temperature

In West Newton, the average high-temperature in December decreases from a frosty 49.5°F (9.7°C) in November to an icy 39.9°F (4.4°C). During the December nights, an average temperature of 28.4°F (-2°C) is observed.

Humidity

The average relative humidity in December is 84%.

Rainfall

In West Newton, in December, during 12.7 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, there are 174.1 rainfall days, and 23.82" (605mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 11.5 days. Throughout December, 2.91" (74mm) of snow is accumulated. Throughout the year, there are 54.8 snowfall days, and 13.58" (345mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:03 pm EST.

Sunshine

In December, the average sunshine is 3.6h.

UV index

With an average maximum UV index of 1, December is the month 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 ordinary individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. When the Sun is at its strongest around midday, find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.

Frequently asked questions

Is it cold during December?

In West Newton, 39.9°F (4.4°C) is the average high-temperature and 28.4°F (-2°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 84%.

How many days does it rain in December?

In West Newton, during December, the rain falls for 12.7 days and regularly aggregates up to 1.97" (50mm) of precipitation.

How much does it snow in West Newton in December?

In West Newton, during December, snow falls for 11.5 days and regularly aggregates up to 2.91" (74mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In West Newton, Pennsylvania, the average day length in December is 9h and 22min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:03 pm EST.

How long on average sun shines in December in West Newton?

In December, the average sunshine duration is 3.6h.

What is the month with the lowest UV index in West Newton?

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

What is the UV index reading in December?

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

Average temperature in December - West Newton, PA
  • Average high temperature in December: 39.9°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 28.4°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 (20.7°F).

Average pressure in December
West Newton, PA

Average pressure in December - West Newton, 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
West Newton, PA

Average wind speed in December - West Newton, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
West Newton, PA

Average humidity in December - West Newton, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in December
West Newton, PA

Average rainfall in December - West Newton, PA
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is November (1.42").

Average rainfall days in December
West Newton, PA

Average rainfall days in December - West Newton, PA
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (10 days).

Average snowfall in December
West Newton, PA

Average snowfall in December - West Newton, PA
  • Average snowfall in December: 2.91"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
West Newton, PA

Average snowfall days in December - West Newton, PA
  • Average snowfall days in December: 11.5 days

The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
West Newton, PA

Average daylight in December / Average sunshine in December - West Newton, 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: 3h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
West Newton, PA

Average sunshine days in December - West Newton, PA
  • Average sunshine days in December: 9.5 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is January (7.3 days).

Average UV index in December
West Newton, PA

Average UV index in December - West Newton, PA
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
West Newton, PA

Average cloud cover in December - West Newton, PA
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
West Newton, PA

Average visibility in December - West Newton, PA
  • Average visibility in December: 5mi

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

West Newton, Pennsylvania, USA

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