December weather forecast
Cumiskey, PA

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Weather in December

December, the first month of the winter in Cumiskey, is still a cold month, with temperature in the range of an average high of 35.2°F (1.8°C) and an average low of 25.7°F (-3.5°C).

Temperature

Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 45.1°F (7.3°C) in November to a cold 35.2°F (1.8°C). Throughout December, Cumiskey witnesses a nighttime temperature average of 25.7°F (-3.5°C).

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Cumiskey, during December, the rain falls for 12 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Cumiskey, during the entire year, the rain falls for 169.1 days and collects up to 28.74" (730mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Cumiskey, in December, snow falls for 13 days, with typically accumulated 4.53" (115mm) of snow. Throughout the year, there are 68.3 snowfall days, and 26.65" (677mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:13 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:45 pm EST.

Sunshine

In December, the average sunshine is 3.3h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The high-temperature, in December, in Cumiskey, records 35.2°F (1.8°C), while the low-temperature is 25.7°F (-3.5°C).

What is the average humidity in December in Cumiskey?

The average relative humidity in December is 84%.

How many days does it rain in December?

In Cumiskey, in December, it is raining for 12 days, with typically 2.13" (54mm) of accumulated precipitation.

How many days does it snow in December?

In Cumiskey, in December, snow falls for 13 days, with typically accumulated 4.53" (115mm) of snow.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Cumiskey.

How many hours of daylight does Cumiskey have in December?

In December, the average day length is 9h and 14min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:13 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:45 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 3.3h.

What are the months with the lowest UV index in Cumiskey?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index reading in December?

In Cumiskey, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Cumiskey, PA

Average temperature in December - Cumiskey, PA
  • Average high temperature in December: 35.2°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in December
Cumiskey, PA

Average pressure in December - Cumiskey, 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
Cumiskey, PA

Average wind speed in December - Cumiskey, PA
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Cumiskey, PA

Average humidity in December - Cumiskey, 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 and July (78%).

Average rainfall in December
Cumiskey, PA

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

The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is November (1.85").

Average rainfall days in December
Cumiskey, PA

Average rainfall days in December - Cumiskey, PA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in December
Cumiskey, PA

Average snowfall in December - Cumiskey, PA
  • Average snowfall in December: 4.53"

The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Cumiskey, PA

Average snowfall days in December - Cumiskey, PA
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is January (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Cumiskey, PA
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).

Average sunshine days in December
Cumiskey, PA

Average sunshine days in December - Cumiskey, PA
  • Average sunshine days in December: 9.4 days

The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (7.8 days).

Average UV index in December
Cumiskey, PA

Average UV index in December - Cumiskey, PA
  • Average UV index in December: 1

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 and December (UV index 1).

Average cloud cover in December
Cumiskey, PA

Average cloud cover in December - Cumiskey, PA
  • Average cloud cover in December: 67

The months with the most cloud cover are January, February and December (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in December
Cumiskey, PA

Average visibility in December - Cumiskey, PA
  • Average visibility in December: 5mi

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

Cumiskey, Pennsylvania, USA

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