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 brings a decrease in the average high-temperature, falling from November's frosty 48.7°F (9.3°C) to a cold 39.7°F (4.3°C). The average low-temperature, in December, in Pine Grove, is a freezing cold 28.2°F (-2.1°C).Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. In Pine Grove, during the entire year, the rain falls for 133.5 days and collects up to 15.16" (385mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Pine Grove, in December, during 3.9 snowfall days, 0.91" (23mm) of snow is typically accumulated. Throughout the year, there are 23.2 snowfall days, and 5.67" (144mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:48 pm EST.
Sunshine
In December, the average sunshine is 4.4h.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 exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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 Pine Grove have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Pine Grove have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Pine Grove, PA
- Average high temperature in December: 39.7°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Pine Grove, 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
Pine Grove, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Pine Grove, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in December
Pine Grove, PA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in December
Pine Grove, PA
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Pine Grove, PA
- Average snowfall in December: 0.91"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pine Grove, PA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pine Grove, 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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Pine Grove, PA
- Average sunshine days in December: 18.3 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in December
Pine Grove, PA
- Average UV index in December: 2
The months with the highest UV index are 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
Pine Grove, PA
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Pine Grove, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, November and December (6mi).
The months with the lowest visibility are February, May, July, August, September and October (5mi).
Pine Grove, Pennsylvania, USA
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