Illinois Weather Forecast
State weather hub
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Compare major city weather across Illinois, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 63. Northwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half 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
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:11 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Illinois
Monday looks like the warmest upcoming period in Illinois at 83 degrees F.
Friday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Sunday at about 14 to 23 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:11 AM CDT
- Coverage
- 6 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 rain showers before 7pm. Mostly cloudy, with a low around 43. Northeast wind 6 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers after 7am. Partly sunny, with a high near 68. East southeast wind around 12 mph, with gusts as high as 20 mph.
A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 58. Southeast wind 9 to 13 mph, with gusts as high as 21 mph.
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 80.
Showers and thunderstorms likely. Mostly cloudy, with a low around 59.
Showers and thunderstorms likely. Mostly cloudy, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
63°F |
8 to 13 mph
NW
|
|
Friday Night
Apr 10
|
Chance Rain Showers then Mostly Cloudy
|
43°F |
6 to 9 mph
NE
|
|
Saturday
Apr 11
|
Slight Chance Rain Showers
|
68°F |
12 mph
ESE
|
|
Saturday Night
Apr 11
|
Slight Chance Rain Showers then Mostly Cloudy
|
58°F |
9 to 13 mph
SE
|
|
Sunday
Apr 12
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
78°F |
14 to 23 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
63°F |
17 to 21 mph
SSW
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
83°F |
17 to 21 mph
SSW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
66°F |
18 mph
SSW
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
80°F |
17 to 23 mph
SSW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms Likely
|
59°F |
14 to 17 mph
SSW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
73°F |
15 to 18 mph
SW
|
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.
Region Links
