Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 14°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Saturday
17th Oct
14

7

9

4
Sunday
18th Oct
17

8

11

4
Monday
19th Oct
19

9

10

4
Tuesday
20th Oct
20

11

10

4
Wednesday
21st Oct
21

12

7

4

5-day weather forecast updated at 04:00 on Saturday 17th October 2026 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.

14
Chicago
14
Springfield

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 Saturday 17th October 2026

Expect scattered clouds in Illinois with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

14
°C maximum temperature
7
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
14
°C wind chill
16
kph wind from SW

Illinois weather for Sunday 18th October 2026

Expect clear skies in Illinois with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

17
°C maximum temperature
8
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
13
kph wind from SW

Illinois weather for Monday 19th October 2026

Expect clear skies in Illinois with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.

19
°C maximum temperature
9
°C minimum temperature
clear skies
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
7
kph wind from S

Illinois weather for Tuesday 20th October 2026

Expect clear skies in Illinois with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 kph from the east.

20
°C maximum temperature
11
°C minimum temperature
clear skies
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
3
kph wind from E

Illinois weather for Wednesday 21st October 2026

Expect scattered clouds in Illinois with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 kph from the south-east.