Illinois weather forecast

Get the latest coronavirus (Covid-19) updates for Illinois with current travel advice and statistics on new cases per 100,000 and vaccine.

Below are temperatures expected tomorrow at popular destinations in Illinois. Select a destination to see the 5-day weather forecast.

36
Springfield
30
Chicago

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The 5-day weather forecast for Illinois is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

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 28th July 2021

Below is the Illinois weather forecast for Wednesday 28th July 2021. Expect isolated thunderstorms in Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 43% chance of some rain and a light breeze of 11 kph from the west.

30
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
6
UV index (High)
43
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from W

Illinois weather for Thursday 29th July 2021

Below is the Illinois weather forecast for Thursday 29th July 2021. Expect isolated thunderstorms in Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 25 kph from the north.

30
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
58
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
25
kph wind from N

Illinois weather for Friday 30th July 2021

Below is the Illinois weather forecast for Friday 30th July 2021. Expect scattered clouds in Illinois with a maximum temperature of 23°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-east.

23
°C maximum temperature
18
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
23
°C wind chill
21
kph wind from NE

Illinois weather for Saturday 31st July 2021

Below is the Illinois weather forecast for Saturday 31st July 2021. Expect isolated thunderstorms in Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 13 kph from the south-west.

28
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
12
hours of sunshine
6
UV index (High)
58
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
13
kph wind from SW

Illinois weather for Sunday 1st August 2021

Below is the Illinois weather forecast for Sunday 1st August 2021. Expect isolated thunderstorms in Illinois with a maximum temperature of 23°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 19 kph from the north.