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
A change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 48°F (8.9°C) to an icy 38.8°F (3.8°C). Throughout December, Whitney records an average temperature of 27.5°F (-2.5°C) at night.Humidity
In Whitney, the average relative humidity in December is 84%.Rainfall
In Whitney, during December, the rain falls for 11.5 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 11.8 days. Throughout December, 4.17" (106mm) of snow is accumulated. In Whitney, during the entire year, snow falls for 58.9 days and aggregates up to 18.62" (473mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:01 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Whitney, PA
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Whitney, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Whitney, PA
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Whitney, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Whitney, PA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").
Average rainfall days in December
Whitney, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in December
Whitney, PA
- Average snowfall in December: 4.17"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Whitney, PA
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Whitney, 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Whitney, PA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).
Average UV index in December
Whitney, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Whitney, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Whitney, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).
Whitney, Pennsylvania, USA
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