Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 20°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Sunday
3rd May
20

8

8

5
Monday
4th May
25

11

11

6
Tuesday
5th May
14

9

1

5
Wednesday
6th May
12

7

2

5
Thursday
7th May
13

7

4

4

5-day weather forecast updated at 04:00 on Monday 4th May 2026 GMT

More about Illinois

Illinois by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Illinois

TUI: Top deals & discounts on 2026/2027 holidays

Sale

Explore latest special offers & online deals from TUI
Free child places & £0 deposits with direct debit available
Book summer & winter sun holidays in 2026/2027

Go to TUI deal >>

View all TUI offers

TUI deal finder

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.

23
Springfield
20
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 Sunday 3rd May 2026

Expect sunshine and showers in Illinois with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 15 kph from the south-west.

20
°C maximum temperature
8
°C minimum temperature
sunshine and showers
8
hours of sunshine
5
UV index (Moderate)
21
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
15
kph wind from SW

Illinois weather for Monday 4th May 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 25°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a light breeze of 11 kph from the south-west.

25
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
11
hours of sunshine
6
UV index (High)
57
% chance of some rain
<5
mm of rainfall expected
25
°C wind chill
11
kph wind from SW

Illinois weather for Tuesday 5th May 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 14°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 17% chance of some rain and a light breeze of 7 kph from the north.

14
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
17
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
7
kph wind from N

Illinois weather for Wednesday 6th May 2026

Expect broken clouds in Illinois with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the north.

12
°C maximum temperature
7
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
12
°C wind chill
4
kph wind from N

Illinois weather for Thursday 7th May 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a light breeze of 7 kph from the west.