Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 66°F. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
25th Mar
66

43

4

5
Thursday
26th Mar
68

37

3

5
Friday
27th Mar
37

34

7

4
Saturday
28th Mar
46

30

10

5
Sunday
29th Mar
57

41

5

4

5-day weather forecast updated at 04:00 on Wednesday 25th 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.

73
Springfield
66
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 25th March 2026

Expect broken clouds in Illinois with a maximum temperature of 66°F, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the south-west.

66
°F maximum temperature
43
°F minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
7
mph wind from SW

Illinois weather for Thursday 26th March 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a gentle breeze of 11 mph from the north.

68
°F maximum temperature
37
°F minimum temperature
isolated thunderstorms
3
hours of sunshine
5
UV index (Moderate)
82
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
11
mph wind from N

Illinois weather for Friday 27th March 2026

Expect broken clouds in Illinois with a maximum temperature of 37°F, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north.

37
°F maximum temperature
34
°F minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
28
°F wind chill
11
mph wind from N

Illinois weather for Saturday 28th March 2026

Expect scattered clouds in Illinois with a maximum temperature of 46°F, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the west.

46
°F maximum temperature
30
°F minimum temperature
scattered clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
45
°F wind chill
4
mph wind from W

Illinois weather for Sunday 29th March 2026

Expect broken clouds in Illinois with a maximum temperature of 57°F, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the south.