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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a chilly 44.1°F (6.7°C) to a cold 34.7°F (1.5°C). The average nighttime temperature lowers to a subzero cold 25.2°F (-3.8°C) throughout December.Humidity
The average relative humidity in December is 85%.Rainfall
In Plank, during December, the rain falls for 11.9 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 161.9 rainfall days, and 20.04" (509mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Plank, in December, during 14.3 snowfall days, 3.5" (89mm) of snow is typically accumulated. In Plank, during the entire year, snow falls for 71.4 days and aggregates up to 16.54" (420mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December in Plank, sunrise is at 7:16 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:49 pm EST.
Sunshine
With an average of 3.1h of sunshine, December has the least sunshine of the year.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 health risk from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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 much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Plank have in December?
When is the sunrise / sunset in December in Plank?
What is the month with the least sunshine?
How long on average sun shines in December in Plank?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Plank, PA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Plank, 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
Plank, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Plank, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in December
Plank, PA
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in December
Plank, PA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Plank, PA
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plank, PA
- Average snowfall days in December: 14.3 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Plank, 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 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in December
Plank, PA
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Plank, 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
Plank, PA
- Average cloud cover in December: 68
The months with the most cloud cover are January and December (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Plank, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).
Plank, Pennsylvania, USA
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