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
Congerville in December demonstrates a small temperature transition, adjusting from an average high of a frosty 47.7°F (8.7°C) in November to a wintry 36.5°F (2.5°C). In Congerville, an average nighttime temperature of 25.9°F (-3.4°C) is expected during December.Humidity
The average relative humidity in December in Congerville is 80%.Rainfall
December is the month with the least rainfall. Rain falls for 7.3 days and accumulates 1.22" (31mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Congerville. In Congerville, Illinois, during December, snow falls for 6.8 days and regularly aggregates up to 1.73" (44mm) of snow. In Congerville, during the entire year, snow falls for 34.9 days and aggregates up to 11.65" (296mm) 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 7:01 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:39 pm CST.
Sunshine
The average sunshine in December in Congerville is 4.4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Congerville, Illinois. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Congerville in December?
What is the average humidity in December in Congerville?
What is the driest month in Congerville?
How many days does it rain in December in Congerville?
How many days does it snow in December in Congerville?
What is the month with the shortest days in Congerville?
What is the average length of the day in December in Congerville?
What time are sunrise and sunset in December in Congerville?
How long on average sun shines in December in Congerville?
When is the lowest UV index in Congerville?
What is the UV index intensity in December in Congerville?
Average temperature in December
Congerville, IL
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Congerville, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Congerville, IL
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Congerville, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Congerville, IL
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.22").
Average rainfall days in December
Congerville, IL
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Congerville, IL
- Average snowfall in December: 1.73"
The months with the highest snowfall are January and February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Congerville, IL
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Congerville, IL
- 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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Congerville, IL
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9 days).
Average UV index in December
Congerville, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Congerville, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Congerville, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Congerville, Illinois, USA
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