Illinois Weather Forecast
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Slight Chance Showers And Thunderstorms
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A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind 7 to 12 mph, with gusts as high as 16 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
State Weather Overview
This state weather page brings together forecast coverage for Illinois so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 189 of 189 mapped cities in Illinois.
Page Snapshot
- Page focus
- state weather
- Forecast window
- Jun 9 to Jun 15, 2026
- Latest sync
- Jun 8, 2026 11:36 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Illinois
Wednesday looks like the warmest upcoming period in Illinois at 92 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Thursday at about 13 to 21 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 11:36 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 72. South southwest wind 6 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 92. South southwest wind 10 to 20 mph, with gusts as high as 28 mph.
Showers and thunderstorms likely after 7pm. Partly cloudy, with a low around 72. South southwest wind 12 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers likely before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 91. South southwest wind 13 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 7pm, then showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 65. West southwest wind 8 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Mostly sunny, with a high near 85.
Mostly clear, with a low around 63.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82.
A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Slight Chance Showers And Thunderstorms
|
89°F |
7 to 12 mph
SW
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
6 to 9 mph
SSW
|
|
Wednesday
Jun 10
|
Sunny
|
92°F |
10 to 20 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
72°F |
12 to 17 mph
SSW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
91°F |
13 to 21 mph
SSW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
65°F |
8 to 18 mph
WSW
|
|
Friday
Jun 12
|
Mostly Sunny
|
85°F |
7 to 12 mph
WNW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
63°F |
5 to 8 mph
WSW
|
|
Saturday
Jun 13
|
Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
6 to 13 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
64°F |
6 to 9 mph
WNW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
82°F |
8 to 14 mph
NNW
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
60°F |
7 to 12 mph
NNE
|
|
Monday
Jun 15
|
Chance Rain Showers
|
80°F |
8 to 13 mph
ESE
|
Major City Forecasts
Live forecast snapshots for major cities across Illinois.
Coverage
Forecast coverage currently spans 189 of 189 mapped cities in Illinois.
Largest mapped city population in this region: 2,677,643.
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