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.

Sunday
12th Apr
27

15

7

6
Monday
13th Apr
25

17

4

5
Tuesday
14th Apr
26

20

6

5
Wednesday
15th Apr
20

16

1

1
Thursday
16th Apr
22

14

8

5

5-day weather forecast updated at 04:00 on Monday 13th 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.

27
Chicago
27
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 Sunday 12th April 2026

Expect sunshine and showers in Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a gentle breeze of 16 kph from the south-west.

27
°C maximum temperature
15
°C minimum temperature
sunshine and showers
7
hours of sunshine
6
UV index (High)
92
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
16
kph wind from SW

Illinois weather for Monday 13th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 37% chance of some rain and a gentle breeze of 15 kph from the south-west.

25
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
5
UV index (Moderate)
37
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
15
kph wind from SW

Illinois weather for Tuesday 14th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a gentle breeze of 13 kph from the south-west.

26
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
5
UV index (Moderate)
82
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
13
kph wind from SW

Illinois weather for Wednesday 15th April 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 20°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 88% chance of some rain and a light breeze of 10 kph from the south-west.

20
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
1
UV index (Low)
88
% chance of some rain
<40
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Illinois weather for Thursday 16th April 2026

Expect sunshine and showers in Illinois with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 29% chance of some rain and a light breeze of 10 kph from the south-west.