Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 8°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Saturday
27th Dec
8

4

1

1
Sunday
28th Dec
14

2

0

0
Monday
29th Dec
0

-7

1

1
Tuesday
30th Dec
0

-8

3

1
Wednesday
31st Dec
1

-9

2

1

5-day weather forecast updated at 04:01 on Saturday 27th 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.

15
Springfield
8
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 27th December 2025

Expect overcast skies in Illinois with a maximum temperature of 8°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

8
°C maximum temperature
4
°C minimum temperature
overcast skies
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
9
kph wind from SE

Illinois weather for Sunday 28th December 2025

Expect isolated thunderstorms in Illinois with a maximum temperature of 14°C and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 100% chance of some rain and a moderate breeze of 20 kph from the west.

14
°C maximum temperature
2
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
0
UV index (None)
100
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
20
kph wind from W

Illinois weather for Monday 29th December 2025

Expect mostly cloudy with light snow in Illinois with a maximum temperature of 0°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 41% chance of some snow and a moderate breeze of 24 kph from the north-west.

0
°C maximum temperature
-7
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
41
% chance of some snow
<2
cm of snow expected
-5
°C wind chill
24
kph wind from NW

Illinois weather for Tuesday 30th December 2025

Expect broken clouds in Illinois with a maximum temperature of 0°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the west.

0
°C maximum temperature
-8
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-4
°C wind chill
15
kph wind from W

Illinois weather for Wednesday 31st December 2025

Expect mostly cloudy with light snow in Illinois with a maximum temperature of 1°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 34% chance of some snow and a gentle breeze of 13 kph from the west.