December weather forecast
Newville, PA

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Weather in December

December, the first month of the winter in Newville, is also an icy month, with an average temperature varying between 40.8°F (4.9°C) and 28.9°F (-1.7°C).

Temperature

In December, the average high-temperature decreases from a frosty 49.8°F (9.9°C) in November to a cold 40.8°F (4.9°C). During the month of December, an average temperature of 28.9°F (-1.7°C) is noted during the nights.

Humidity

The average relative humidity in December is 79%.

Rainfall

In Newville, during December, the rain falls for 10.8 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 158 rainfall days, and 28.03" (712mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Newville, during December, snow falls for 4.9 days and regularly aggregates up to 1.89" (48mm) of snow. In Newville, during the entire year, snow falls for 29.2 days and aggregates up to 15.31" (389mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December is 4.6h.

UV index

January through March, 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 minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Boost your sun resistance with garments that are densely woven yet spacious. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.

Frequently asked questions

How cold is December?

Newville in December has an average high-temperature of 40.8°F (4.9°C) and an average low-temperature of 28.9°F (-1.7°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

How much does it rain in December?

In Newville, in December, during 10.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Newville, during December, snow falls for 4.9 days and regularly aggregates up to 1.89" (48mm) 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.

What is the average length of the day in December?

In December, the average day length is 9h and 22min.

When is the sunrise / sunset in December in Newville?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:54 pm EST.

How many hours of sunshine does Newville have in December?

In December, the average sunshine duration is 4.6h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

In Newville, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Newville, PA

Average temperature in December - Newville, PA
  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

Average pressure in December
Newville, PA

Average pressure in December - Newville, 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
Newville, PA

Average wind speed in December - Newville, PA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in December
Newville, PA

Average humidity in December - Newville, PA
  • Average humidity in December: 79%

The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in December
Newville, PA

Average rainfall in December - Newville, PA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Newville, PA

Average rainfall days in December - Newville, PA
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in December
Newville, PA

Average snowfall in December - Newville, PA
  • Average snowfall in December: 1.89"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Newville, PA

Average snowfall days in December - Newville, PA
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Newville, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in December
Newville, PA

Average sunshine days in December - Newville, PA
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11 days).

Average UV index in December
Newville, PA

Average UV index in December - Newville, 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, March, November and December (UV index 2).

Average cloud cover in December
Newville, PA

Average cloud cover in December - Newville, PA
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Newville, PA

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

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

Newville, Pennsylvania, USA

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