Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 7°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
4th Mar
7

1

2

3
Thursday
5th Mar
10

6

0

1
Friday
6th Mar
20

6

1

5
Saturday
7th Mar
20

8

1

4
Sunday
8th Mar
14

6

11

4

5-day weather forecast updated at 04:00 on Wednesday 4th March 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.

12
Springfield
7
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 4th March 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 7°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and little or no wind of 5 kph from the north-east.

7
°C maximum temperature
1
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
26
% chance of some rain
<2
mm of rainfall expected
7
°C wind chill
5
kph wind from NE

Illinois weather for Thursday 5th March 2026

Expect overcast with light rain in Illinois with a maximum temperature of 10°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 61% chance of some rain and little or no wind of 4 kph from the north-east.

10
°C maximum temperature
6
°C minimum temperature
overcast with light rain
0
hours of sunshine
1
UV index (Low)
61
% chance of some rain
<5
mm of rainfall expected
10
°C wind chill
4
kph wind from NE

Illinois weather for Friday 6th March 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 13 kph from the south.

20
°C maximum temperature
6
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
5
UV index (Moderate)
72
% chance of some rain
<10
mm of rainfall expected
20
°C wind chill
13
kph wind from S

Illinois weather for Saturday 7th March 2026

Expect mostly cloudy with rain in Illinois with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 36% chance of some rain and a gentle breeze of 14 kph from the south-west.

20
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
4
UV index (Moderate)
36
% chance of some rain
<10
mm of rainfall expected
20
°C wind chill
14
kph wind from SW

Illinois weather for Sunday 8th March 2026

Expect scattered clouds 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 13 kph from the south-west.