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September 17th, 2025 :: 7:18 pm CDT   

Local Weather Report for
Trenton
Illinois, United States

 Current Trenton Weather Conditions Updated September 17th at 5:55 pm 
Temperature:91°F Dew Point:54°F
Barometer:29.98 inHg Wind:N 6 Mph
Humidity:27.9% Visibility:0M
 
 Trenton Weather Forecast Summary  
 
Today
Sep 17th
Thursday
Sep 18th
Friday
Sep 19th
Saturday
Sep 20th
Sunday
Sep 21st
Sunny Cloudy Cloudy Thundershowers Mix of Cloud and Sun
94°F
98°F
63°F
85°F
63°F
86°F
63°F
88°F
61°F
 
 Trenton Detailed Weather Forecast  
 
Wednesday, September 17th, 2025
Evening Temperature: 69°F
Clear.
Thursday, September 18th, 2025
Overnight Temperature: 64°F
Clear.
Morning Temperature: 90°F
A mix of cloud and sun.
Afternoon Temperature: 91°F
Cloudy.
Evening Temperature: 72°F
Cloudy.
Friday, September 19th, 2025
Overnight Temperature: 64°F
A mix of cloudy and clear skies.
Morning Temperature: 83°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 78°F
Cloudy with a slight chance of showers or thundershowers.
Evening Temperature: 68°F
Cloudy with a chance of showers.
Saturday, September 20th, 2025
Overnight Temperature: 63°F
Cloudy.
Morning Temperature: 80°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 76°F
Cloudy with showers likely. Chance of a thunderstorm.
Evening Temperature: 65°F
Clear with cloudy periods with a slight chance of showers.
Sunday, September 21st, 2025
Overnight Temperature: 61°F
A mix of cloudy and clear skies.
Morning Temperature: 80°F
Sunny with cloudy periods. Slight chance of a thunderstorm.
Afternoon Temperature: 84°F
A mix of cloud and sun.
Evening Temperature: 70°F
A mix of cloudy and clear skies with a slight chance of showers.
Monday, September 22nd, 2025
Overnight Temperature: 67°F
Cloudy.
Morning Temperature: 72°F
Cloudy. Windy at times.
Afternoon Temperature: 74°F
Cloudy. Windy at times.
Evening Temperature: 67°F
Cloudy with a chance of showers.
Tuesday, September 23rd, 2025
Overnight Temperature: 66°F
Cloudy with a slight chance of showers.
Morning Temperature: 78°F
Cloudy with a slight chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 81°F
Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 68°F
Clear.
Wednesday, September 24th, 2025
Overnight Temperature: 65°F
Clear.
Morning Temperature: 86°F
Cloudy. Windy at times.
Afternoon Temperature: 88°F
Cloudy. Windy at times.
Evening Temperature: 74°F
Clear.
Thursday, September 25th, 2025
Overnight Temperature: 68°F
Clear.
Morning Temperature: 86°F
Cloudy. Slight chance of a thunderstorm.
Afternoon Temperature: 87°F
Cloudy. Chance of a thunderstorm. Windy at times.
Evening Temperature: 76°F
Cloudy. Slight chance of a thunderstorm.





 

  [ Local Weather Report ]
Lebanon, IL 
5:55 PM  91°F
 
 
Breese, IL 
 
Belleville, IL 
5:55 PM  91°F
 
 
Highland, IL 
 
Mascoutah, IL 
5:55 PM  91°F
 
 
Petersburg, IL 
5:55 PM  91°F
 
 
Troy, IL 
 
Pontiac, IL 
5:55 PM  91°F
 
 
Collinsville, IL 
5:53 PM  90°F
 
 
Fairview Heights, IL 
5:53 PM  90°F
 

This WeatherCity Weather Forecast for Trenton, 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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