Madison County, IL Weather Forecast
County weather hub
Slight Chance Showers And Thunderstorms
Compare major city weather across Madison County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 73. South wind around 5 mph. Chance of precipitation is 20%.
County Weather Overview
This county weather page brings together forecast coverage for Madison County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 17 of 17 mapped cities in Madison County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 2:57 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Madison County
Thursday looks like the warmest upcoming period in Madison County at 92 degrees F.
Sunday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Sunday at about 5 to 9 mph NE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 2:57 AM 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
Scattered showers and thunderstorms after 3pm. Partly sunny, with a high near 89. West wind around 6 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northeast wind 2 to 6 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Partly sunny, with a high near 86. East wind 2 to 6 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Northeast wind 2 to 6 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. Chance of precipitation is 20%.
Sunny, with a high near 88.
Mostly clear, with a low around 69.
Sunny, with a high near 90.
Mostly clear, with a low around 71.
Sunny, with a high near 91.
Mostly clear, with a low around 72.
Sunny, with a high near 92.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 10
|
Slight Chance Showers And Thunderstorms
|
73°F |
5 mph
S
|
|
Friday
Jul 10
|
Partly Sunny then Scattered Showers And Thunderstorms
|
89°F |
6 mph
W
|
|
Friday Night
Jul 10
|
Chance Showers And Thunderstorms
|
71°F |
2 to 6 mph
NE
|
|
Saturday
Jul 11
|
Chance Showers And Thunderstorms
|
86°F |
2 to 6 mph
E
|
|
Saturday Night
Jul 11
|
Chance Showers And Thunderstorms
|
69°F |
2 to 6 mph
NE
|
|
Sunday
Jul 12
|
Slight Chance Showers And Thunderstorms
|
86°F |
5 to 9 mph
NE
|
|
Sunday Night
Jul 12
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
68°F |
3 to 9 mph
NE
|
|
Monday
Jul 13
|
Sunny
|
88°F |
5 to 9 mph
NE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
69°F |
2 to 8 mph
NE
|
|
Tuesday
Jul 14
|
Sunny
|
90°F |
3 to 8 mph
E
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
71°F |
0 to 8 mph
E
|
|
Wednesday
Jul 15
|
Sunny
|
91°F |
0 to 6 mph
S
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
72°F |
2 to 6 mph
SE
|
|
Thursday
Jul 16
|
Sunny
|
92°F |
3 to 7 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Madison County.
Coverage
Forecast coverage currently spans 17 of 17 mapped cities in Madison County.
Largest mapped city population in this region: 29,251.
