Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 13°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Tuesday
17th Feb
13

8

1

2
Wednesday
18th Feb
17

9

8

2
Thursday
19th Feb
12

5

2

3
Friday
20th Feb
7

3

1

1
Saturday
21st Feb
3

-1

1

2

5-day weather forecast updated at 04:01 on Tuesday 17th February 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.

14
Springfield
13
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 Tuesday 17th February 2026

Expect broken clouds in Illinois with a maximum temperature of 13°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.

13
°C maximum temperature
8
°C minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SE

Illinois weather for Wednesday 18th February 2026

Expect broken clouds in Illinois with a maximum temperature of 17°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

17
°C maximum temperature
9
°C minimum temperature
broken clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from SW

Illinois weather for Thursday 19th February 2026

Expect isolated thunderstorms in Illinois with a maximum temperature of 12°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 95% chance of some rain and a light breeze of 11 kph from the south-east.

12
°C maximum temperature
5
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
95
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
11
kph wind from SE

Illinois weather for Friday 20th February 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 7°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 21 kph from the south-west.

7
°C maximum temperature
3
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
25
% chance of some rain
<5
mm of rainfall expected
4
°C wind chill
21
kph wind from SW

Illinois weather for Saturday 21st February 2026

Expect mostly cloudy with light snow in Illinois with a maximum temperature of 3°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 25% chance of some snow and a light breeze of 10 kph from the north-west.