Cahokia, IL Weather Forecast
Local 7-day forecast
Widespread Fog
Track current conditions, temperature changes, wind, and the full daily outlook for Cahokia, IL in one place.
Widespread fog. Mostly clear, with a low around 57. Wind around 0 mph.
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: Aug 24, 2026 5:43 AM CDT.
The active forecast window currently covers Aug 24 to Aug 30, 2026 for Cahokia, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 5:43 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cahokia
Sunday looks like the warmest upcoming period in Cahokia at 93 degrees F.
Overnight is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Sunday at about 5 to 9 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 5:43 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
Widespread fog before 9am. Mostly sunny, with a high near 84. East wind 0 to 5 mph.
Mostly clear, with a low around 64. East wind around 5 mph.
Mostly sunny, with a high near 87. East wind 2 to 6 mph.
Partly cloudy, with a low around 67. Southeast wind 1 to 5 mph.
A slight chance of rain showers between 7am and 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 69. Chance of precipitation is 30%.
Sunny, with a high near 88.
Mostly clear, with a low around 65.
Sunny, with a high near 88.
Mostly clear, with a low around 67.
Mostly sunny, with a high near 91.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 72. Chance of precipitation is 20%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 24
|
Widespread Fog
|
57°F |
0 mph
|
|
Monday
Aug 24
|
Widespread Fog then Mostly Sunny
|
84°F |
0 to 5 mph
E
|
|
Monday Night
Aug 24
|
Mostly Clear
|
64°F |
5 mph
E
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
87°F |
2 to 6 mph
E
|
|
Tuesday Night
Aug 25
|
Partly Cloudy
|
67°F |
1 to 5 mph
SE
|
|
Wednesday
Aug 26
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
90°F |
1 to 5 mph
SW
|
|
Wednesday Night
Aug 26
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
69°F |
1 to 5 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
88°F |
2 to 7 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
65°F |
0 to 6 mph
N
|
|
Friday
Aug 28
|
Sunny
|
88°F |
0 to 3 mph
NE
|
|
Friday Night
Aug 28
|
Mostly Clear
|
67°F |
5 mph
E
|
|
Saturday
Aug 29
|
Mostly Sunny
|
91°F |
2 to 7 mph
S
|
|
Saturday Night
Aug 29
|
Mostly Cloudy then Slight Chance Rain Showers
|
72°F |
6 mph
S
|
|
Sunday
Aug 30
|
Slight Chance Rain Showers then Mostly Sunny
|
93°F |
5 to 9 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cahokia.
