December weather forecast
New Salem, PA

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Weather in December

The first month of the winter, December, is also a wintry month in New Salem, Pennsylvania, with an average temperature varying between 29.1°F (-1.6°C) and 40.1°F (4.5°C).

Temperature

In New Salem, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 49.8°F (9.9°C) to a wintry 40.1°F (4.5°C). New Salem records a steady low-temperature average of 29.1°F (-1.6°C) during December.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In New Salem, in December, during 9.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In New Salem, during the entire year, the rain falls for 143.4 days and collects up to 13.19" (335mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, in New Salem, it is snowing for 11.4 days. Throughout December, 2.44" (62mm) of snow is accumulated. In New Salem, during the entire year, snow falls for 56 days and aggregates up to 11.54" (293mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:04 pm EST.

Sunshine

In New Salem, the average sunshine in December is 3.8h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 1 in December translates into this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.

Frequently asked questions

Is December cold?

The high-temperature, in December, in New Salem, is 40.1°F (4.5°C), while the low-temperature averages to 29.1°F (-1.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December in New Salem?

In December, the average relative humidity is 83%.

How many days does it rain in December?

In New Salem, during December, the rain falls for 9.1 days and regularly aggregates up to 1.1" (28mm) of precipitation.

How many days does it snow in December?

In December, in New Salem, it is snowing for 11.4 days. Throughout December, 2.44" (62mm) of snow is accumulated.

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 New Salem have in December?

In December, the average day length is 9h and 23min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:04 pm EST.

How many hours of sunshine does New Salem have in December?

The average sunshine duration in December is 3.8h.

When is the lowest UV index?

December is the month with the lowest UV index in New Salem, with an average maximum UV index of 1.

What is the UV index reading in December?

In New Salem, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health risk 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
New Salem, PA

Average temperature in December - New Salem, PA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 29.1°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in December
New Salem, PA

Average pressure in December - New Salem, 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
New Salem, PA

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

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in December
New Salem, PA

Average humidity in December - New Salem, PA
  • Average humidity in December: 83%

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

Average rainfall in December
New Salem, PA

Average rainfall in December - New Salem, PA
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days in December
New Salem, PA

Average rainfall days in December - New Salem, PA
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.2 days).

Average snowfall in December
New Salem, PA

Average snowfall in December - New Salem, PA
  • Average snowfall in December: 2.44"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
New Salem, PA

Average snowfall days in December - New Salem, PA
  • Average snowfall days in December: 11.4 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
New Salem, PA

Average daylight in December / Average sunshine in December - New Salem, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in December
New Salem, PA

Average sunshine days in December - New Salem, PA
  • Average sunshine days in December: 13.2 days

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is January (9.1 days).

Average UV index in December
New Salem, PA

Average UV index in December - New Salem, 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
New Salem, PA

Average cloud cover in December - New Salem, PA
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December
New Salem, PA

Average visibility in December - New Salem, 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).

New Salem, Pennsylvania, USA

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