Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's arrival correlates with a reduction in the average high-temperature, down from a cool 50.2°F (10.1°C) in November to a wintry 40.6°F (4.8°C). An average low-temperature of 29.7°F (-1.3°C) marks the nights throughout December.Humidity
In December, the average relative humidity is 80%.Rainfall
In Shillington, during December, the rain falls for 10.4 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Shillington, during the entire year, the rain falls for 155.7 days and collects up to 30.83" (783mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Shillington, in December, snow falls for 3.7 days, with typically accumulated 1.5" (38mm) of snow. In Shillington, during the entire year, snow falls for 21.1 days and aggregates up to 12.28" (312mm) 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 December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:47 pm EST.
Sunshine
In Shillington, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Shillington?
What is the average length of the day in December?
When is the sunrise / sunset in December in Shillington?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Shillington, PA
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Shillington, 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
Shillington, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Shillington, PA
- Average humidity in December: 80%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Shillington, PA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is February (2.05").
Average rainfall days in December
Shillington, PA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Shillington, PA
- Average snowfall in December: 1.5"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shillington, PA
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shillington, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Shillington, PA
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Shillington, 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
Shillington, PA
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Shillington, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, November and December (6mi).
The months with the lowest visibility are February, May, August, September and October (5mi).
Shillington, Pennsylvania, USA
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