Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 32°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Thursday
16th Jul
32

26

12

8
Friday
17th Jul
31

26

7

8
Saturday
18th Jul
32

22

7

8
Sunday
19th Jul
25

21

10

8
Monday
20th Jul
30

21

4

8

5-day weather forecast updated at 04:00 on Thursday 16th 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.

32
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 Thursday 16th July 2026

Expect scattered clouds in Illinois with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (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 east.

32
°C maximum temperature
26
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
5
kph wind from E

Illinois weather for Friday 17th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 31°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 69% chance of some rain and little or no wind of 6 kph from the south-west.

31
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
69
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from SW

Illinois weather for Saturday 18th July 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 32°C, high 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 68% chance of some rain and a light breeze of 12 kph from the north.

32
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
68
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
12
kph wind from N

Illinois weather for Sunday 19th July 2026

Expect scattered clouds in Illinois with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

25
°C maximum temperature
21
°C minimum temperature
scattered clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from NE

Illinois weather for Monday 20th 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 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 56% chance of some rain and a light breeze of 11 kph from the south-west.