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
Arrival of December comes with a reduction in the average high-temperature, falling from a chilly 8.2°C (46.8°F) in November to a cold 2.7°C (36.9°F). An average low-temperature of -3.1°C (26.4°F) is recorded during the nights in December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In December, in State College, Pennsylvania, the rain falls for 12.6 days. Throughout December, 64mm (2.52") of precipitation is accumulated. In State College, during the entire year, the rain falls for 175.7 days and collects up to 786mm (30.94") of precipitation.Snowfall
January through May, October through December are months with snowfall. In State College, in December, during 11.5 snowfall days, 113mm (4.45") of snow is typically accumulated. In State College, during the entire year, snow falls for 59 days and aggregates up to 668mm (26.3") of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:16 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:53 pm EST.
Sunshine
The average sunshine in December is 3.7h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
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 State College have in December?
When is the sunrise / sunset in December in State College?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
State College, PA
- Average high temperature in December: 2.7°C
The warmest month (with the highest average high temperature) is July (27.9°C).
The month with the lowest average high temperature is January (-0.5°C).
- Average low temperature in December: -3.1°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is January (-7.4°C).
Average pressure in December
State College, PA
- Average pressure in December: 1019.2mbar
The month with the highest atmospheric pressure is November (1020.3mbar).
The month with the lowest atmospheric pressure is June (1014.1mbar).
Average wind speed in December
State College, PA
- Average wind speed in December: 11.9km/h
The windiest month (with the highest average wind speed) is January (12.8km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).
Average humidity in December
State College, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
State College, PA
- Average rainfall in December: 64mm
The wettest month (with the highest rainfall) is May (89mm).
The driest month (with the least rainfall) is November (51mm).
Average rainfall days in December
State College, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in December
State College, PA
- Average snowfall in December: 113mm
The month with the highest snowfall is February (172mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
State College, PA
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
State College, PA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
State College, PA
- Average sunshine days in December: 12 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in December
State College, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
State College, PA
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
State College, PA
- Average visibility in December: 8km
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is February (7km).
State College, Pennsylvania, USA
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