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 December arrives, University Park's weather displays a decrease in high-temperatures, transitioning from November's chilly 47.1°F (8.4°C) to a cold 35.6°F (2°C). University Park, during the month of December, experiences an average low-temperature of 25.9°F (-3.4°C).Humidity
In University Park, the average relative humidity in December is 81%.Rainfall
In University Park, in December, during 8.5 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In University Park, during the entire year, the rain falls for 167.4 days and collects up to 35" (889mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 9.8 days. Throughout December, 3.07" (78mm) of snow is accumulated. Throughout the year, there are 47.8 snowfall days, and 20.04" (509mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:58 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:31 pm CST.
Sunshine
In University Park, the average sunshine in December is 4h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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 many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does University Park have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does University Park have in December?
What is the month with the lowest UV index in University Park?
What is the UV index reading in December?
Average temperature in December
University Park, IL
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
University Park, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
University Park, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
University Park, IL
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
University Park, IL
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
University Park, IL
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in December
University Park, IL
- Average snowfall in December: 3.07"
The month with the highest snowfall is February (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
University Park, IL
- Average snowfall days in December: 9.8 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
University Park, IL
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
University Park, IL
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in December
University Park, IL
- 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
University Park, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
University Park, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
University Park, Illinois, USA
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