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July 5th, 2026 :: 12:28 pm CDT   

Local Weather Report for
Collinsville
Illinois, United States

 Collinsville Weather Forecast Summary  
 
Today
Jul 5th
Monday
Jul 6th
Tuesday
Jul 7th
Wednesday
Jul 8th
Thursday
Jul 9th
Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
85°F
84°F
68°F
82°F
66°F
90°F
67°F
93°F
74°F
 
 Collinsville Detailed Weather Forecast  
 
Sunday, July 5th, 2026
Afternoon Temperature: 84°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 77°F
Clear. Chance of a thunderstorm. Windy at times.
Monday, July 6th, 2026
Overnight Temperature: 69°F
Mostly clear. Slight chance of a thunderstorm.
Morning Temperature: 72°F
Mostly sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 83°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 75°F
Clear with cloudy periods. Chance of a thunderstorm.
Tuesday, July 7th, 2026
Overnight Temperature: 67°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 82°F
A mix of cloud and sun. Chance of a thunderstorm.
Evening Temperature: 74°F
Mostly clear. Chance of a thunderstorm.
Wednesday, July 8th, 2026
Overnight Temperature: 68°F
Clear.
Morning Temperature: 74°F
Sunny.
Afternoon Temperature: 88°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 81°F
Clear. Chance of a thunderstorm. Windy at times.
Thursday, July 9th, 2026
Overnight Temperature: 74°F
Clear. Chance of a thunderstorm.
Morning Temperature: 78°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 88°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 86°F
Mostly clear. Chance of a thunderstorm. Windy.
Friday, July 10th, 2026
Overnight Temperature: 71°F
Mostly cloudy with showers. Windy at times.
Morning Temperature: 74°F
Mostly cloudy with showers. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 85°F
Sunny with cloudy periods with a chance of showers or thundershowers.
Evening Temperature: 75°F
Clear with cloudy periods with showers likely. Chance of a thunderstorm.
Saturday, July 11th, 2026
Overnight Temperature: 71°F
A mix of cloudy and clear skies with a chance of showers.
Morning Temperature: 75°F
A mix of cloud and sun with a chance of showers or thundershowers.
Afternoon Temperature: 85°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 75°F
Mostly clear with a chance of showers or thundershowers. Windy at times.
Sunday, July 12th, 2026
Overnight Temperature: 68°F
Clear. Windy at times.
Morning Temperature: 72°F
Mostly sunny.
Afternoon Temperature: 83°F
Sunny. Slight chance of a thunderstorm.
Evening Temperature: 77°F
Clear. Chance of a thunderstorm.
Monday, July 13th, 2026
Overnight Temperature: 70°F
Clear.
Morning Temperature: 75°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 86°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 78°F
Mostly clear. Chance of a thunderstorm.





 

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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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