Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 34°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
1st Jul
34

26

12

9
Thursday
2nd Jul
35

28

11

9
Friday
3rd Jul
32

27

7

8
Saturday
4th Jul
30

23

7

8
Sunday
5th Jul
26

23

6

7

5-day weather forecast updated at 04:00 on Wednesday 1st July 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.

34
Chicago
34
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 Wednesday 1st July 2026

Expect scattered clouds in Illinois with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

34
°C maximum temperature
26
°C minimum temperature
scattered clouds
12
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
14
kph wind from SW

Illinois weather for Thursday 2nd July 2026

Expect scattered clouds in Illinois with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

35
°C maximum temperature
28
°C minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
11
kph wind from SW

Illinois weather for Friday 3rd July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 60% chance of some rain and a light breeze of 7 kph from the south-west.

32
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
60
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from SW

Illinois weather for Saturday 4th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 70% chance of some rain and little or no wind of 5 kph from the south-west.

30
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
70
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from SW

Illinois weather for Sunday 5th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 57% chance of some rain and little or no wind of 6 kph from the north-east.