Illinois weather in December 2024

Expect 36°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Illinois in December. Check more long-term weather averages for Illinois in December before you book your next holiday to Illinois in 2024/2025.

36
36°F max day temperature
3
3 hours of sunshine per day
12
12 days with some rainfall
19
19°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
1
1 (Low) UV index
41
41°F sea temperature

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The December weather guide for Illinois (Chicago) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Illinois destinations

Below are average maximum temperatures at popular destinations in Illinois in December. Select a destination to see more weather parameters.

37
Springfield
36
Chicago

All Illinois destinations

Metric (°C) | Imperial (°F)

More about the USA

How cold is it in Illinois in December?

Daytime temperatures usually reach 36°F in Chicago, Illinois in December, falling to 19°F at night.

How sunny is it in Illinois in December?

There are normally 3 hours of bright sunshine each day in Chicago, Illinois in December - that's 37% of daylight hours.

How warm is the sea around Illinois in December?

The average sea temperature around Chicago, Illinois in December is 41°F.

Does it rain in Illinois in December?

There are usually 12 days with some rain in Chicago, Illinois in December and the average monthly rainfall is 2.4 inches. Rain may fall as snow in this month.

Illinois December sunrise & sunset times

Browse the sunrise and sunset times for Illinois in December 2024. Select a month to view Illinois sunrise and sunset times for the next 12 months. The Illinois sunrise and sunset times shown below are for Chicago.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st December 2024	06:59	16:20
Monday, 16th December 2024	07:12	16:21
Tuesday, 31st December 2024	07:18	16:30

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Illinois - quick facts
Flight time^✝	8.5 hours
Time difference	UK -6 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Culture
Tourist info	Illinois Department of Commerce & Economic Opportunity