Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 26°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
27th May
26

18

12

7
Thursday
28th May
19

15

15

8
Friday
29th May
24

14

15

8
Saturday
30th May
22

16

12

8
Sunday
31st May
20

14

15

8

5-day weather forecast updated at 04:00 on Wednesday 27th May 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
26
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 Wednesday 27th May 2026

Expect scattered clouds in Illinois with a maximum temperature of 26°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

26
°C maximum temperature
18
°C minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
26
°C wind chill
7
kph wind from NE

Illinois weather for Thursday 28th May 2026

Expect clear skies in Illinois with a maximum temperature of 19°C, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

19
°C maximum temperature
15
°C minimum temperature
clear skies
15
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from N

Illinois weather for Friday 29th May 2026

Expect clear skies in Illinois with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the east.

24
°C maximum temperature
14
°C minimum temperature
clear skies
15
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
24
°C wind chill
4
kph wind from E

Illinois weather for Saturday 30th May 2026

Expect scattered clouds in Illinois with a maximum temperature of 22°C, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

22
°C maximum temperature
16
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
22
°C wind chill
12
kph wind from NE

Illinois weather for Sunday 31st May 2026

Expect clear skies in Illinois with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-east.