Cahokia, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Cahokia, IL in one place.
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Heat index values as high as 100. West wind 3 to 7 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Cahokia, 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: Jul 9, 2026 12:39 AM CDT.
The active forecast window currently covers Jul 10 to Jul 15, 2026 for Cahokia, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 15, 2026
- Latest sync
- Jul 9, 2026 12:39 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cahokia
Wednesday looks like the warmest upcoming period in Cahokia at 93 degrees F.
Sunday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Sunday at about 2 to 8 mph NE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 9, 2026 12:39 AM 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
Showers and thunderstorms likely before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 73. Southwest wind 2 to 6 mph. Chance of precipitation is 70%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 70. Chance of precipitation is 20%.
Sunny, with a high near 89.
Mostly clear, with a low around 71.
Sunny, with a high near 92.
Mostly clear, with a low around 73.
Sunny, with a high near 93.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 10
|
Chance Showers And Thunderstorms
|
90°F |
3 to 7 mph
W
|
|
Friday Night
Jul 10
|
Showers And Thunderstorms Likely
|
73°F |
2 to 6 mph
SW
|
|
Saturday
Jul 11
|
Showers And Thunderstorms Likely
|
88°F |
2 to 6 mph
NW
|
|
Saturday Night
Jul 11
|
Chance Showers And Thunderstorms
|
71°F |
1 to 6 mph
NE
|
|
Sunday
Jul 12
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
88°F |
2 to 8 mph
NE
|
|
Sunday Night
Jul 12
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
70°F |
1 to 8 mph
NE
|
|
Monday
Jul 13
|
Sunny
|
89°F |
1 to 8 mph
NE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
71°F |
1 to 8 mph
E
|
|
Tuesday
Jul 14
|
Sunny
|
92°F |
1 to 7 mph
NE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
73°F |
0 to 7 mph
S
|
|
Wednesday
Jul 15
|
Sunny
|
93°F |
0 to 6 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cahokia.
