Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 15°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
6th May
15

9

4

3
Thursday
7th May
15

7

6

4
Friday
8th May
19

9

5

5
Saturday
9th May
24

10

9

7
Sunday
10th May
16

9

0

5

5-day weather forecast updated at 04:00 on Wednesday 6th 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.

15
Chicago
15
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 6th May 2026

Expect broken clouds in Illinois with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-west.

15
°C maximum temperature
9
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
5
kph wind from NW

Illinois weather for Thursday 7th May 2026

Expect sunshine and showers in Illinois with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a light breeze of 8 kph from the west.

15
°C maximum temperature
7
°C minimum temperature
sunshine and showers
6
hours of sunshine
4
UV index (Moderate)
34
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
8
kph wind from W

Illinois weather for Friday 8th May 2026

Expect mostly cloudy with rain in Illinois with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 52% chance of some rain and little or no wind of 6 kph from the south-west.

19
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
5
hours of sunshine
5
UV index (Moderate)
52
% chance of some rain
<10
mm of rainfall expected
19
°C wind chill
6
kph wind from SW

Illinois weather for Saturday 9th May 2026

Expect scattered clouds in Illinois with a maximum temperature of 24°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

24
°C maximum temperature
10
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
24
°C wind chill
11
kph wind from SW

Illinois weather for Sunday 10th May 2026

Expect broken clouds in Illinois with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.