Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 31°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
8th Jul
31

21

12

9
Thursday
9th Jul
28

21

5

8
Friday
10th Jul
24

20

4

8
Saturday
11th Jul
27

20

11

9
Sunday
12th Jul
29

21

15

9

5-day weather forecast updated at 04:00 on Wednesday 8th 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.

31
Chicago
31
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 8th July 2026

Expect scattered clouds in Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-west.

31
°C maximum temperature
21
°C minimum temperature
scattered clouds
12
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from SW

Illinois weather for Thursday 9th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 85% chance of some rain and little or no wind of 6 kph from the south-west.

28
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
85
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
6
kph wind from SW

Illinois weather for Friday 10th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 27% chance of some rain and a light breeze of 7 kph from the north.

24
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
27
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
7
kph wind from N

Illinois weather for Saturday 11th July 2026

Expect scattered clouds in Illinois with a maximum temperature of 27°C, low 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 7 kph from the north-east.

27
°C maximum temperature
20
°C minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from NE

Illinois weather for Sunday 12th July 2026

Expect clear skies in Illinois with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-east.