December weather forecast
Stull, PA

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Weather in December

December, the first month of the winter in Stull, is also a wintry month, with an average temperature varying between 25.7°F (-3.5°C) and 36°F (2.2°C).

Temperature

The move into December indicates a reduction in the average high-temperature, down from November's chilly 45.7°F (7.6°C) to a wintry 36°F (2.2°C). An average minimum temperature of 25.7°F (-3.5°C) marks the month of December.

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 84%.

Rainfall

In Stull, Pennsylvania, in December, it is raining for 10.3 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 166.2 rainfall days, and 30.83" (783mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Stull, in December, during 11.1 snowfall days, 4.33" (110mm) of snow is typically accumulated. In Stull, during the entire year, snow falls for 57.9 days and aggregates up to 29.53" (750mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:11 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:44 pm EST.

Sunshine

In Stull, the average sunshine in December is 3.8h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

An average high-temperature, in December, in Stull, is 36°F (2.2°C) and the average low-temperature is 25.7°F (-3.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in July is appraised at 86°F (30°C).

What are the most humid months?

February and December, with an average relative humidity of 84%, are most humid months.

What is the average humidity in December?

The average relative humidity in December is 84%.

How many days does it rain in December?

In Stull, in December, during 10.3 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

How much does it snow in December?

In Stull, in December, during 11.1 snowfall days, 4.33" (110mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days in Stull is December, with an average of 9h and 12min of daylight.

How many hours of daylight does Stull have in December?

The average day length in December in Stull, Pennsylvania, is 9h and 14min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:11 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:44 pm EST.

How many hours of sunshine does Stull have in December?

In December, the average sunshine duration in Stull, Pennsylvania, is 3.8h.

What is the month with the lowest UV index in Stull?

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

What is the UV index intensity in December?

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

Average temperature in December - Stull, PA
  • Average high temperature in December: 36°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Stull, PA

Average pressure in December - Stull, 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
Stull, PA

Average wind speed in December - Stull, PA
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are March and April (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Stull, PA

Average humidity in December - Stull, PA
  • Average humidity in December: 84%

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall in December
Stull, PA

Average rainfall in December - Stull, PA
  • Average rainfall in December: 2.17"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (2.01").

Average rainfall days in December
Stull, PA

Average rainfall days in December - Stull, PA
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in December
Stull, PA

Average snowfall in December - Stull, PA
  • Average snowfall in December: 4.33"

The month with the highest snowfall is February (8.66").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Stull, PA

Average snowfall days in December - Stull, PA
  • Average snowfall days in December: 11.1 days

The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Stull, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

Average sunshine days in December
Stull, PA

Average sunshine days in December - Stull, PA
  • Average sunshine days in December: 13.7 days

The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in December
Stull, PA

Average UV index in December - Stull, 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
Stull, PA

Average cloud cover in December - Stull, PA
  • Average cloud cover in December: 62

The months with the most cloud cover are February and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December
Stull, PA

Average visibility in December - Stull, 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).

Stull, Pennsylvania, USA

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