Madison, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Madison, IL in one place.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Madison, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 11, 2026 10:53 PM CDT.
The active forecast window currently covers Apr 15 to Apr 18, 2026 for Madison, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 18, 2026
- Latest sync
- Apr 11, 2026 10:53 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Madison
Friday looks like the warmest upcoming period in Madison at 87 degrees F.
Friday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Friday at about 5 to 13 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 11, 2026 10:53 PM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 63. Chance of precipitation is 40%.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly sunny, with a high near 71. Chance of precipitation is 60%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
83°F |
12 mph
SW
|
|
Wednesday Night
Apr 15
|
Showers And Thunderstorms Likely
|
64°F |
6 to 10 mph
SW
|
|
Thursday
Apr 16
|
Showers And Thunderstorms Likely
|
85°F |
6 to 9 mph
SW
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
63°F |
7 mph
S
|
|
Friday
Apr 17
|
Chance Showers And Thunderstorms
|
87°F |
5 to 13 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely
|
57°F |
12 mph
SW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
71°F |
13 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Madison.
