Madison, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Madison, IL in one place.
Mostly sunny, with a high near 91. Southeast wind 1 to 7 mph.
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: Aug 28, 2026 10:21 PM CDT.
The active forecast window currently covers Aug 29 to Sep 4, 2026 for Madison, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 28, 2026 10:21 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Madison
Monday looks like the warmest upcoming period in Madison at 100 degrees F.
Saturday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph S.
The forecast from Aug 29 through Sep 4 stays mostly dry.
Forecast Details
- Last updated
- Aug 28, 2026 10:21 PM CDT
- Coverage
- 7 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
Mostly clear, with a low around 71. South wind around 7 mph.
Sunny, with a high near 97. South wind 5 to 10 mph.
Mostly clear, with a low around 77. South wind around 8 mph.
Sunny, with a high near 100.
Mostly clear, with a low around 79.
Sunny, with a high near 100.
Mostly clear, with a low around 80.
Sunny, with a high near 100.
Mostly clear, with a low around 80.
Sunny, with a high near 100.
Partly cloudy, with a low around 80.
Mostly sunny, with a high near 98.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny
|
91°F |
1 to 7 mph
SE
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
71°F |
7 mph
S
|
|
Sunday
Aug 30
|
Sunny
|
97°F |
5 to 10 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
77°F |
8 mph
S
|
|
Monday
Aug 31
|
Sunny
|
100°F |
9 mph
S
|
|
Monday Night
Aug 31
|
Mostly Clear
|
79°F |
8 mph
S
|
|
Tuesday
Sep 1
|
Sunny
|
100°F |
7 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
80°F |
8 mph
S
|
|
Wednesday
Sep 2
|
Sunny
|
100°F |
5 to 8 mph
SW
|
|
Wednesday Night
Sep 2
|
Mostly Clear
|
80°F |
7 mph
S
|
|
Thursday
Sep 3
|
Sunny
|
100°F |
7 mph
SW
|
|
Thursday Night
Sep 3
|
Partly Cloudy
|
80°F |
6 mph
S
|
|
Friday
Sep 4
|
Mostly Sunny
|
98°F |
5 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Madison.
