December weather forecast
Saint Nicholas, PA

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Weather in December

December, the first month of the winter in Saint Nicholas, is also an icy month, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 27.5°F (-2.5°C).

Temperature

The transition into December indicates a reduction in the average high-temperature, down to a cold 37.9°F (3.3°C) from November's chilly 47.3°F (8.5°C). During the month of December, the nighttime temperature falls to an average of 27.5°F (-2.5°C).

Humidity

The average relative humidity in December is 82%.

Rainfall

In Saint Nicholas, during December, the rain falls for 12.6 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 171 rainfall days, and 34.25" (870mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Saint Nicholas, during December, snow falls for 8.6 days and regularly aggregates up to 3.9" (99mm) of snow. Throughout the year, in Saint Nicholas, there are 48.5 snowfall days, and 27.72" (704mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:47 pm EST.

Sunshine

In December, the average sunshine is 4.4h.

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 low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Saint Nicholas?

The average high-temperature and low-temperature during December are 37.9°F (3.3°C) and 27.5°F (-2.5°C) respectively. In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 82%.

How much does it rain in December?

In Saint Nicholas, in December, it is raining for 12.6 days, with typically 2.87" (73mm) of accumulated precipitation.

How many days does it snow in December?

In Saint Nicholas, in December, during 8.6 snowfall days, 3.9" (99mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December?

In Saint Nicholas, the average day length in December is 9h and 19min.

When are sunrise and sunset in December in Saint Nicholas?

On the first day of December, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:47 pm EST.

How many hours of sunshine does Saint Nicholas have in December?

In December, the average sunshine duration is 4.4h.

What are the months with the lowest UV index in Saint Nicholas?

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 intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Saint Nicholas, PA

Average temperature in December - Saint Nicholas, PA
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

Average pressure in December
Saint Nicholas, PA

Average pressure in December - Saint Nicholas, 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 (29.94"Hg).

Average wind speed in December
Saint Nicholas, PA

Average wind speed in December - Saint Nicholas, PA
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Saint Nicholas, PA

Average humidity in December - Saint Nicholas, PA
  • Average humidity in December: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Saint Nicholas, PA

Average rainfall in December - Saint Nicholas, PA
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Saint Nicholas, PA

Average rainfall days in December - Saint Nicholas, PA
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in December
Saint Nicholas, PA

Average snowfall in December - Saint Nicholas, PA
  • Average snowfall in December: 3.9"

The month with the highest snowfall is January (7.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Saint Nicholas, PA

Average snowfall days in December - Saint Nicholas, PA
  • Average snowfall days in December: 8.6 days

The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Saint Nicholas, PA

Average daylight in December / Average sunshine in December - Saint Nicholas, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).

Average sunshine days in December
Saint Nicholas, PA

Average sunshine days in December - Saint Nicholas, PA
  • Average sunshine days in December: 13.6 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (9.1 days).

Average UV index in December
Saint Nicholas, PA

Average UV index in December - Saint Nicholas, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Saint Nicholas, PA

Average cloud cover in December - Saint Nicholas, PA
  • Average cloud cover in December: 54

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Saint Nicholas, PA

Average visibility in December - Saint Nicholas, 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).

Saint Nicholas, Pennsylvania, USA

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