Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 27°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Tuesday
14th Apr
27

21

6

6
Wednesday
15th Apr
23

18

2

4
Thursday
16th Apr
21

12

3

3
Friday
17th Apr
24

11

5

5
Saturday
18th Apr
23

7

5

5

5-day weather forecast updated at 04:00 on Tuesday 14th 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.

30
Springfield
27
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 14th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 14 kph from the south-west.

27
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
86
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
14
kph wind from SW

Illinois weather for Wednesday 15th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 93% chance of some rain and a light breeze of 9 kph from the south-west.

23
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
4
UV index (Moderate)
93
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
9
kph wind from SW

Illinois weather for Thursday 16th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a light breeze of 7 kph from the south-west.

21
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
51
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
7
kph wind from SW

Illinois weather for Friday 17th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a light breeze of 10 kph from the south-east.

24
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
5
UV index (Moderate)
38
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
10
kph wind from SE

Illinois weather for Saturday 18th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 16 kph from the west.