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.

Wednesday
14th Oct
22

17

1

3
Thursday
15th Oct
17

15

0

1
Friday
16th Oct
15

10

3

3
Saturday
17th Oct
14

8

11

4
Sunday
18th Oct
18

9

11

5

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

25
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 Wednesday 14th October 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 11% chance of some rain and a gentle breeze of 13 kph from the north-east.

22
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
3
UV index (Moderate)
11
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from NE

Illinois weather for Thursday 15th October 2026

Expect cloudy with some rain in Illinois with a maximum temperature of 17°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a light breeze of 12 kph from the east.

17
°C maximum temperature
15
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
99
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
12
kph wind from E

Illinois weather for Friday 16th October 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 37% chance of some rain and a moderate breeze of 22 kph from the north-west.

15
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
37
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
22
kph wind from NW

Illinois weather for Saturday 17th October 2026

Expect clear skies in Illinois with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

14
°C maximum temperature
8
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

Illinois weather for Sunday 18th October 2026

Expect clear skies in Illinois with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.