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
The shift from November to December involves a decrease in the average high-temperature, from a frosty 49.1°F (9.5°C) to a wintry 39.9°F (4.4°C). An average minimum temperature of 28.4°F (-2°C) is recorded during the month of December.Humidity
The average relative humidity in December 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, in December, during 11.8 snowfall days, 2.6" (66mm) of snow is typically accumulated. In Gladden, during the entire year, snow falls for 55.6 days and aggregates up to 13.62" (346mm) 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 7:24 am and sunset at 4:55 pm. On the last day of December, sunrise is at 7:43 am and sunset at 5:04 pm EST.
Sunshine
In Gladden, Pennsylvania, the average sunshine in December is 3.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in 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 in Gladden?
How many hours of daylight does Gladden have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December in Gladden?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Gladden, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, Pennsylvania, USA
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