Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 18°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Saturday
7th Mar
18

6

2

3
Sunday
8th Mar
15

5

12

4
Monday
9th Mar
19

10

10

4
Tuesday
10th Mar
18

9

0

3
Wednesday
11th Mar
8

2

0

2

5-day weather forecast updated at 04:00 on Saturday 7th 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.

19
Springfield
18
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 Saturday 7th March 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 36% chance of some rain and a gentle breeze of 15 kph from the west.

18
°C maximum temperature
6
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
36
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
15
kph wind from W

Illinois weather for Sunday 8th March 2026

Expect clear skies in Illinois with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

15
°C maximum temperature
5
°C minimum temperature
clear skies
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
15
kph wind from SW

Illinois weather for Monday 9th March 2026

Expect scattered clouds in Illinois with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

19
°C maximum temperature
10
°C minimum temperature
scattered clouds
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from SW

Illinois weather for Tuesday 10th March 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 84% chance of some rain and a light breeze of 11 kph from the north.

18
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
84
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
11
kph wind from N

Illinois weather for Wednesday 11th March 2026

Expect cloudy with some rain in Illinois with a maximum temperature of 8°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 15 kph from the north.