Madison County, IL Weather Forecast
County weather hub
Rain Showers Likely
Compare major city weather across Madison County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy. High near 70, with temperatures falling to around 66 in the afternoon. West wind 8 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
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
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 4:28 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Madison County
Tuesday looks like the warmest upcoming period in Madison County at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Sunday at about 10 to 20 mph S.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 4:28 PM CDT
- Coverage
- 6 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
A chance of rain showers. Mostly cloudy, with a low around 50. Northeast wind around 8 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 72. East wind around 9 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Rain Showers Likely
|
70°F |
8 to 12 mph
W
|
|
Friday Night
Apr 10
|
Chance Rain Showers
|
50°F |
8 mph
NE
|
|
Saturday
Apr 11
|
Chance Rain Showers
|
72°F |
9 mph
E
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
60°F |
10 mph
SE
|
|
Sunday
Apr 12
|
Mostly Cloudy then Slight Chance Rain Showers
|
78°F |
10 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
64°F |
16 mph
S
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
82°F |
13 to 16 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms
|
68°F |
12 to 15 mph
S
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
84°F |
12 to 17 mph
S
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms
|
66°F |
16 mph
S
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
81°F |
14 to 17 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
58°F |
7 to 12 mph
SW
|
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.
