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September 5th, 2026 :: 4:06 am CDT   

Local Weather Report for
Knoxville
Illinois, United States

 Knoxville Weather Forecast Summary  
 
Today
Sep 5th
Sunday
Sep 6th
Monday
Sep 7th
Tuesday
Sep 8th
Wednesday
Sep 9th
Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
88°F
80°F
64°F
79°F
60°F
92°F
61°F
86°F
69°F
 
 Knoxville Detailed Weather Forecast  
 
Saturday, September 5th, 2026
Morning Temperature: 78°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 87°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 76°F
Clear. Chance of a thunderstorm. Windy at times.
Sunday, September 6th, 2026
Overnight Temperature: 66°F
Clear.
Morning Temperature: 69°F
Sunny. Windy at times.
Afternoon Temperature: 80°F
Mostly sunny. Windy at times.
Evening Temperature: 70°F
Mostly clear. Windy at times.
Monday, September 7th, 2026
Overnight Temperature: 61°F
Mostly clear.
Morning Temperature: 66°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 76°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 69°F
Mostly clear. Windy at times.
Tuesday, September 8th, 2026
Overnight Temperature: 62°F
Mostly clear.
Morning Temperature: 68°F
Sunny. Windy at times.
Afternoon Temperature: 89°F
Sunny. Windy at times.
Evening Temperature: 84°F
Mostly clear. Windy at times.
Wednesday, September 9th, 2026
Overnight Temperature: 75°F
Mostly clear with a chance of showers. Windy at times.
Morning Temperature: 71°F
A mix of sun and cloud with a chance of showers.
Afternoon Temperature: 85°F
A mix of sun and cloud with a slight chance of showers.
Evening Temperature: 72°F
Clear with cloudy periods.
Thursday, September 10th, 2026
Overnight Temperature: 65°F
Mostly clear.
Morning Temperature: 61°F
Cloudy with showers likely. Windy at times.
Afternoon Temperature: 62°F
Cloudy with a few showers.
Evening Temperature: 60°F
A mix of cloudy and clear skies with showers likely.
Friday, September 11th, 2026
Overnight Temperature: 57°F
Mostly clear.
Morning Temperature: 61°F
Mostly sunny. Windy at times.
Afternoon Temperature: 74°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 63°F
Clear. Windy at times.
Saturday, September 12th, 2026
Overnight Temperature: 56°F
Clear.
Morning Temperature: 62°F
Sunny.
Afternoon Temperature: 80°F
Sunny.
Evening Temperature: 70°F
Clear.
Sunday, September 13th, 2026
Overnight Temperature: 67°F
Clear. Windy at times.
Morning Temperature: 74°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 82°F
A mix of sun and cloud. Chance of a thunderstorm. Windy at times.
Evening Temperature: 68°F
A mix of cloudy and clear skies. Windy at times.





 

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This WeatherCity Weather Forecast for Knoxville, 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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