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.

Saturday
21st Mar
20

5

9

6
Sunday
22nd Mar
16

1

1

3
Monday
23rd Mar
5

0

9

4
Tuesday
24th Mar
11

0

2

2
Wednesday
25th Mar
9

5

1

4

5-day weather forecast updated at 04:00 on Saturday 21st 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.

26
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 Saturday 21st March 2026

Expect scattered clouds in Illinois with a maximum temperature of 20°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

20
°C maximum temperature
5
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
20
°C wind chill
11
kph wind from SW

Illinois weather for Sunday 22nd March 2026

Expect broken clouds in Illinois with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

16
°C maximum temperature
1
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
19
kph wind from N

Illinois weather for Monday 23rd March 2026

Expect broken clouds in Illinois with a maximum temperature of 5°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

5
°C maximum temperature
0
°C minimum temperature
broken clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
2
°C wind chill
14
kph wind from N

Illinois weather for Tuesday 24th March 2026

Expect broken clouds in Illinois with a maximum temperature of 11°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

11
°C maximum temperature
0
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
11
°C wind chill
8
kph wind from S

Illinois weather for Wednesday 25th March 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 9°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 8 kph from the east.