Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 22°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Tuesday
12th May
22

7

5

5
Wednesday
13th May
15

10

5

3
Thursday
14th May
17

8

7

7
Friday
15th May
23

11

7

5
Saturday
16th May
28

15

8

7

5-day weather forecast updated at 04:00 on Tuesday 12th 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.

27
Springfield
22
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 Tuesday 12th May 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 14 kph from the south-west.

22
°C maximum temperature
7
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
67
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

Illinois weather for Wednesday 13th May 2026

Expect broken clouds in Illinois with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

15
°C maximum temperature
10
°C minimum temperature
broken clouds
5
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from NW

Illinois weather for Thursday 14th May 2026

Expect broken clouds in Illinois with a maximum temperature of 17°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

17
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
17
°C wind chill
5
kph wind from E

Illinois weather for Friday 15th May 2026

Expect sunshine and showers in Illinois with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 51% chance of some rain and a light breeze of 11 kph from the south.

23
°C maximum temperature
11
°C minimum temperature
sunshine and showers
7
hours of sunshine
5
UV index (Moderate)
51
% chance of some rain
<5
mm of rainfall expected
23
°C wind chill
11
kph wind from S

Illinois weather for Saturday 16th May 2026

Expect sunshine and showers in Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and little or no wind of 6 kph from the south-west.