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August 13th, 2026 :: 3:33 am CDT   

Local Weather Report for
Cahokia
Illinois, United States

 Cahokia Weather Forecast Summary  
 
Today
Aug 13th
Friday
Aug 14th
Saturday
Aug 15th
Sunday
Aug 16th
Monday
Aug 17th
Thundershowers Mostly Sunny Mostly Sunny Thundershowers Mostly Cloudy with Showers
94°F
100°F
76°F
105°F
76°F
98°F
73°F
82°F
67°F
 
 Cahokia Detailed Weather Forecast  
 
Thursday, August 13th, 2026
Overnight Temperature: 71°F
Mostly clear with showers likely.
Morning Temperature: 79°F
Mostly sunny with a chance of showers or thundershowers.
Afternoon Temperature: 93°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 84°F
Clear. Chance of a thunderstorm.
Friday, August 14th, 2026
Overnight Temperature: 79°F
Clear. Slight chance of a thunderstorm.
Morning Temperature: 81°F
Sunny with cloudy periods with a slight chance of showers or thundershowers.
Afternoon Temperature: 97°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 87°F
Clear. Chance of a thunderstorm.
Saturday, August 15th, 2026
Overnight Temperature: 78°F
Clear with a slight chance of showers.
Morning Temperature: 84°F
Sunny with a slight chance of showers.
Afternoon Temperature: 101°F
Sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 92°F
A mix of cloudy and clear skies. Chance of a thunderstorm.
Sunday, August 16th, 2026
Overnight Temperature: 81°F
Clear.
Morning Temperature: 81°F
Sunny with cloudy periods. Chance of a thunderstorm.
Afternoon Temperature: 96°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 73°F
A mix of cloudy and clear skies with a few showers. Windy.
Monday, August 17th, 2026
Overnight Temperature: 69°F
Mostly clear with showers likely.
Morning Temperature: 71°F
Mostly sunny. Windy at times.
Afternoon Temperature: 82°F
Sunny. Windy at times.
Evening Temperature: 73°F
Mostly clear.
Tuesday, August 18th, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 87°F
Sunny.
Evening Temperature: 77°F
Clear.
Wednesday, August 19th, 2026
Overnight Temperature: 72°F
Mostly clear with a slight chance of showers. Windy at times.
Morning Temperature: 72°F
Mostly cloudy with a slight chance of showers. Windy at times.
Afternoon Temperature: 87°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy.
Evening Temperature: 82°F
Mostly clear with a slight chance of showers or thundershowers.
Thursday, August 20th, 2026
Overnight Temperature: 74°F
Mostly clear with a chance of showers.
Morning Temperature: 78°F
Sunny with a chance of showers or thundershowers.
Afternoon Temperature: 97°F
Sunny with cloudy periods with a slight chance of showers or thundershowers.
Evening Temperature: 86°F
Clear. Chance of a thunderstorm.
Friday, August 21st, 2026
Overnight Temperature: 78°F
Clear. Slight chance of a thunderstorm. Windy at times.
Morning Temperature: 80°F
Mostly sunny with a chance of showers or thundershowers.
Afternoon Temperature: 102°F
Sunny. Slight chance of a thunderstorm.
Evening Temperature: 90°F
A mix of clear and cloudy skies. Slight chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Cahokia, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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