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
With December's arrival, Copella's weather changes as the average high-temperature falls from a frosty 48.6°F (9.2°C) in November to a wintry 39°F (3.9°C). Throughout December, the nighttime temperature in Copella averages to a subzero cold 28°F (-2.2°C).Humidity
In Copella, the average relative humidity in December is 81%.Rainfall
In December, the rain falls for 13.1 days. Throughout December, 3.19" (81mm) of precipitation is accumulated. In Copella, Pennsylvania, during the entire year, the rain falls for 167 days and collects up to 33.5" (851mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Copella, in December, during 6.1 snowfall days, 3.19" (81mm) of snow is typically accumulated. Throughout the year, there are 33.8 snowfall days, and 17.91" (455mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Copella.On the first day of December, sunrise is at 7:07 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:43 pm EST.
Sunshine
In Copella, the average sunshine in December is 4.7h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. 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. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Copella during December?
What is the average humidity in December in Copella?
How many days does it rain in December in Copella?
How many days does it snow in December in Copella?
What is the month with the shortest days in Copella?
How many hours of daylight does Copella have in December?
When is the sunrise / sunset in December in Copella?
How many hours of sunshine does Copella have in December?
When is the lowest UV index in Copella?
What is the UV index intensity in December in Copella?
Average temperature in December
Copella, PA
- Average high temperature in December: 39°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 (33.4°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Copella, 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
Copella, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Copella, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Copella, PA
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is July (3.46").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Copella, PA
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in December
Copella, PA
- Average snowfall in December: 3.19"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Copella, PA
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Copella, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Copella, PA
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Copella, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Copella, PA
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Copella, 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).
Copella, Pennsylvania, USA
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