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July 27th, 2025 :: 2:37 am CDT   

Local Weather Report for
Collinsville
Illinois, United States

 Collinsville Weather Forecast Summary  
 
Today
Jul 27th
Monday
Jul 28th
Tuesday
Jul 29th
Wednesday
Jul 30th
Thursday
Jul 31st
Cloudy Thundershowers Mix of Cloud and Sun Thundershowers Cloudy
93°F
91°F
75°F
94°F
77°F
94°F
73°F
80°F
71°F
 
 Collinsville Detailed Weather Forecast  
 
Sunday, July 27th, 2025
Overnight Temperature: 74°F
Cloudy. Slight chance of a thunderstorm.
Morning Temperature: 85°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 90°F
A mix of cloud and sun with a chance of showers or thundershowers.
Evening Temperature: 77°F
Cloudy. Chance of a thunderstorm.
Monday, July 28th, 2025
Overnight Temperature: 75°F
Cloudy with showers likely. Chance of a thunderstorm.
Morning Temperature: 85°F
Cloudy with showers likely. Chance of a thunderstorm.
Afternoon Temperature: 90°F
Cloudy. Chance of a thunderstorm.
Evening Temperature: 80°F
A mix of cloudy and clear skies. Chance of a thunderstorm.
Tuesday, July 29th, 2025
Overnight Temperature: 78°F
A mix of cloudy and clear skies. Chance of a thunderstorm.
Morning Temperature: 88°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 93°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 80°F
A mix of clear and cloudy skies. Chance of a thunderstorm.
Wednesday, July 30th, 2025
Overnight Temperature: 77°F
Clear. Chance of a thunderstorm.
Morning Temperature: 88°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 91°F
Cloudy with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 74°F
Cloudy with a few showers. Chance of a thunderstorm.
Thursday, July 31st, 2025
Overnight Temperature: 72°F
Cloudy with a chance of showers or thundershowers. Windy at times.
Morning Temperature: 75°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 79°F
Cloudy. Chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Cloudy. Windy at times.
Friday, August 1st, 2025
Overnight Temperature: 68°F
Cloudy. Windy at times.
Morning Temperature: 72°F
Cloudy. Windy at times.
Afternoon Temperature: 73°F
Cloudy. Windy at times.
Evening Temperature: 67°F
Cloudy.
Saturday, August 2nd, 2025
Overnight Temperature: 63°F
Clear with cloudy periods.
Morning Temperature: 72°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 75°F
Cloudy. Windy at times.
Evening Temperature: 66°F
Cloudy.
Sunday, August 3rd, 2025
Overnight Temperature: 65°F
Cloudy.
Morning Temperature: 76°F
Sunny.
Afternoon Temperature: 81°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 71°F
Clear.
Monday, August 4th, 2025
Overnight Temperature: 68°F
Clear.
Morning Temperature: 82°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 88°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 78°F
Clear. Chance of a thunderstorm. Windy at times.





 

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This WeatherCity Weather Forecast for Collinsville, 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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