Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be 3°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

Wednesday
10th Dec
3

-4

1

1
Thursday
11th Dec
-4

-7

3

2
Friday
12th Dec
0

-6

1

1
Saturday
13th Dec
-7

-13

0

1
Sunday
14th Dec
-13

-15

9

1

5-day weather forecast updated at 04:01 on Wednesday 10th 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.

6
Springfield
3
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 10th December 2025

Expect cloudy with sleet or snow in Illinois with a maximum temperature of 3°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 78% chance of some sleet or snow and a moderate breeze of 21 kph from the north-west.

3
°C maximum temperature
-4
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
1
UV index (Low)
78
% chance of some sleet or snow
<10
mm of sleet/snow expected
-1
°C wind chill
21
kph wind from NW

Illinois weather for Thursday 11th December 2025

Expect mostly cloudy with light snow in Illinois with a maximum temperature of -4°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 cm of snow expected with 44% chance of some snow and a light breeze of 11 kph from the north-west.

-4
°C maximum temperature
-7
°C minimum temperature
mostly cloudy with light snow
3
hours of sunshine
2
UV index (Low)
44
% chance of some snow
<2
cm of snow expected
-8
°C wind chill
11
kph wind from NW

Illinois weather for Friday 12th 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 2-5 cm of snow expected with 42% chance of some snow and a gentle breeze of 15 kph from the west.

0
°C maximum temperature
-6
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
42
% chance of some snow
<5
cm of snow expected
-5
°C wind chill
15
kph wind from W

Illinois weather for Saturday 13th December 2025

Expect mostly cloudy with light snow in Illinois with a maximum temperature of -7°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 68% chance of some snow and a gentle breeze of 15 kph from the west.

-7
°C maximum temperature
-13
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
68
% chance of some snow
<2
cm of snow expected
-13
°C wind chill
15
kph wind from W

Illinois weather for Sunday 14th December 2025

Expect scattered clouds in Illinois with a maximum temperature of -13°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 14 kph from the north-west.