Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be -1°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Sunday
21st Dec
-1

-7

9

1
Monday
22nd Dec
5

-1

0

1
Tuesday
23rd Dec
8

2

3

2
Wednesday
24th Dec
8

1

2

1
Thursday
25th Dec
12

6

0

1

5-day weather forecast updated at 04:00 on Sunday 21st December 2025 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.

5
Springfield
-1
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 Sunday 21st December 2025

Expect scattered clouds in Illinois with a maximum temperature of -1°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 13 kph from the north-west.

-1
°C maximum temperature
-7
°C minimum temperature
scattered clouds
9
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-6
°C wind chill
13
kph wind from NW

Illinois weather for Monday 22nd December 2025

Expect cloudy with sleet or snow in Illinois with a maximum temperature of 5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 11% chance of some sleet or snow and a light breeze of 11 kph from the south.

5
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
11
% chance of some sleet or snow
<2
mm of sleet/snow expected
3
°C wind chill
11
kph wind from S

Illinois weather for Tuesday 23rd December 2025

Expect broken clouds in Illinois with a maximum temperature of 8°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

8
°C maximum temperature
2
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
9
kph wind from W

Illinois weather for Wednesday 24th December 2025

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 8°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a light breeze of 8 kph from the south-east.

8
°C maximum temperature
1
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
49
% chance of some rain
<2
mm of rainfall expected
6
°C wind chill
8
kph wind from SE

Illinois weather for Thursday 25th December 2025

Expect fog in low lying areas in Illinois with a maximum temperature of 12°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.