Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 24°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Friday
19th Jun
24

16

13

9
Saturday
20th Jun
26

20

11

8
Sunday
21st Jun
21

18

1

5
Monday
22nd Jun
20

17

11

7
Tuesday
23rd Jun
20

16

8

8

5-day weather forecast updated at 04:00 on Saturday 20th June 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.

28
Springfield
24
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 Friday 19th June 2026

Expect scattered clouds in Illinois with a maximum temperature of 24°C, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

24
°C maximum temperature
16
°C minimum temperature
scattered clouds
13
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
24
°C wind chill
8
kph wind from W

Illinois weather for Saturday 20th June 2026

Expect sunshine and showers in Illinois with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 1% chance of some rain and a light breeze of 9 kph from the west.

26
°C maximum temperature
20
°C minimum temperature
sunshine and showers
11
hours of sunshine
8
UV index (Very High)
1
% chance of some rain
<2
mm of rainfall expected
26
°C wind chill
9
kph wind from W

Illinois weather for Sunday 21st June 2026

Expect mostly cloudy with rain in Illinois with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 14 kph from the north-east.

21
°C maximum temperature
18
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
5
UV index (Moderate)
78
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
14
kph wind from NE

Illinois weather for Monday 22nd June 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 20°C, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 5-10 mm of rainfall expected with 19% chance of some rain and a gentle breeze of 13 kph from the north.

20
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
11
hours of sunshine
7
UV index (High)
19
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
13
kph wind from N

Illinois weather for Tuesday 23rd June 2026

Expect scattered clouds in Illinois with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.