Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be -5°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Monday
15th Dec
-5

-15

5

2
Tuesday
16th Dec
3

-7

7

2
Wednesday
17th Dec
3

1

7

1
Thursday
18th Dec
7

-4

1

0
Friday
19th Dec
-3

-8

5

1

5-day weather forecast updated at 04:00 on Tuesday 16th December 2025 GMT

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Destination

The 5-day weather forecast for Illinois (Chicago) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Top Illinois destinations

Below are temperatures expected today at popular countries, regions and places in Illinois. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

0
Springfield
-5
Chicago

All Illinois destinations

Illinois weather forecast by day

Below are the detailed weather forecasts for Illinois for the next 5 days. The forecasts shown are for Chicago and may not represent the whole of Illinois. Browse more destinations in Illinois to view more weather forecasts.

Illinois weather for Monday 15th December 2025

Expect broken clouds in Illinois with a maximum temperature of -5°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the south-west.

-5
°C maximum temperature
-15
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
cm of snow expected
-11
°C wind chill
16
kph wind from SW

Illinois weather for Tuesday 16th December 2025

Expect scattered clouds in Illinois with a maximum temperature of 3°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

3
°C maximum temperature
-7
°C minimum temperature
scattered clouds
7
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
-1
°C wind chill
16
kph wind from SW

Illinois weather for Wednesday 17th December 2025

Expect broken clouds in Illinois with a maximum temperature of 3°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.

3
°C maximum temperature
1
°C minimum temperature
broken clouds
7
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-1
°C wind chill
16
kph wind from S

Illinois weather for Thursday 18th December 2025

Expect cloudy with sleet or snow in Illinois with a maximum temperature of 7°C and 1 hour of bright sunshine. There are 10-20 mm of sleet/snow expected with 83% chance of some sleet or snow and a moderate breeze of 20 kph from the west.

7
°C maximum temperature
-4
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
0
UV index (None)
83
% chance of some sleet or snow
<20
mm of sleet/snow expected
4
°C wind chill
20
kph wind from W

Illinois weather for Friday 19th December 2025

Expect clear skies with flurries of snow in Illinois with a maximum temperature of -3°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 3% chance of some snow and a moderate breeze of 20 kph from the west.