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 Gladden Heights enters December, the average high-temperature decreases from the a frosty 49.1°F (9.5°C) of November to a cold 39.9°F (4.4°C). Gladden Heights's nighttime temperature in December falls to an average of 28.4°F (-2°C).Humidity
In December, the average relative humidity is 84%.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 2.05" (52mm) of precipitation is accumulated. Throughout the year, there are 170.6 rainfall days, and 25.79" (655mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Gladden Heights, during December, snow falls for 11.8 days and regularly aggregates up to 2.6" (66mm) of snow. Throughout the year, there are 55.6 snowfall days, and 13.62" (346mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine is 3.5h.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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December in Gladden Heights?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Gladden Heights?
How many hours of daylight does Gladden Heights have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Gladden Heights have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Gladden Heights, PA
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.4°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 (20.7°F).
Average pressure in December
Gladden Heights, 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
Gladden Heights, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Gladden Heights, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in December
Gladden Heights, PA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Gladden Heights, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Gladden Heights, PA
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Gladden Heights, PA
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Gladden Heights, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Gladden Heights, PA
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
Gladden Heights, 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
Gladden Heights, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Gladden Heights, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, August and November (6mi).
The month with the lowest visibility is February (4mi).
Gladden Heights, Pennsylvania, USA
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