Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 24°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
15th Apr
24

18

2

5
Thursday
16th Apr
20

11

3

4
Friday
17th Apr
26

11

8

7
Saturday
18th Apr
20

10

9

6
Sunday
19th Apr
10

5

9

7

5-day weather forecast updated at 04:00 on Wednesday 15th April 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.

26
Springfield
24
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 15th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 89% chance of some rain and a light breeze of 9 kph from the south-west.

24
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
5
UV index (Moderate)
89
% chance of some rain
<30
mm of rainfall expected
24
°C wind chill
9
kph wind from SW

Illinois weather for Thursday 16th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 68% chance of some rain and a light breeze of 8 kph from the south-west.

20
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
68
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from SW

Illinois weather for Friday 17th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 26°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a light breeze of 11 kph from the south.

26
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
7
UV index (High)
52
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
11
kph wind from S

Illinois weather for Saturday 18th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 20°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 10-20 mm of rainfall expected with 76% chance of some rain and a gentle breeze of 14 kph from the west.

20
°C maximum temperature
10
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
6
UV index (High)
76
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
14
kph wind from W

Illinois weather for Sunday 19th April 2026

Expect scattered clouds in Illinois with a maximum temperature of 10°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.