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July 18th, 2025 :: 7:29 pm CDT   

Local Weather Report for
Alton
Illinois, United States

 Current Alton Weather Conditions Updated July 18th at 5:50 pm 
Overcast
Temperature:29°C Dew Point:24°C
Barometer:101.7 kPa Wind:N 21 Km/h
Humidity:74.5% Visibility:0 Km
 
 Alton Weather Forecast Summary  
 
Today
Jul 18th
Saturday
Jul 19th
Sunday
Jul 20th
Monday
Jul 21st
Tuesday
Jul 22nd
Thundershowers Thundershowers Thundershowers Thundershowers Mix of Cloud and Sun
28°C
33°C
22°C
33°C
23°C
32°C
22°C
34°C
24°C
 
 Alton Detailed Weather Forecast  
 
Friday, July 18th, 2025
Evening Temperature: 23°C
Cloudy with showers likely. Chance of a thunderstorm.
Saturday, July 19th, 2025
Overnight Temperature: 23°C
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Morning Temperature: 28°C
Cloudy with showers likely. Chance of a thunderstorm.
Afternoon Temperature: 32°C
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 26°C
Clear. Chance of a thunderstorm.
Sunday, July 20th, 2025
Overnight Temperature: 24°C
Cloudy. Slight chance of a thunderstorm.
Morning Temperature: 29°C
Cloudy. Chance of a thunderstorm.
Afternoon Temperature: 31°C
Mostly sunny with a slight chance of showers or thundershowers.
Evening Temperature: 24°C
Mostly clear with showers likely. Chance of a thunderstorm.
Monday, July 21st, 2025
Overnight Temperature: 23°C
Cloudy with a few showers. Chance of a thunderstorm.
Morning Temperature: 30°C
Cloudy with showers likely. Chance of a thunderstorm.
Afternoon Temperature: 31°C
Cloudy with a slight chance of showers or thundershowers.
Evening Temperature: 26°C
Clear with a chance of showers or thundershowers.
Tuesday, July 22nd, 2025
Overnight Temperature: 24°C
Clear. Chance of a thunderstorm.
Morning Temperature: 32°C
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 32°C
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Evening Temperature: 26°C
Clear. Chance of a thunderstorm.
Wednesday, July 23rd, 2025
Overnight Temperature: 25°C
Mostly clear. Slight chance of a thunderstorm.
Morning Temperature: 32°C
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 35°C
Sunny. Chance of a thunderstorm.
Evening Temperature: 27°C
Clear. Chance of a thunderstorm.
Thursday, July 24th, 2025
Overnight Temperature: 25°C
Clear. Slight chance of a thunderstorm.
Morning Temperature: 31°C
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 33°C
Sunny. Chance of a thunderstorm.
Evening Temperature: 25°C
Cloudy with showers likely. Chance of a thunderstorm. Windy.
Friday, July 25th, 2025
Overnight Temperature: 23°C
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Morning Temperature: 31°C
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 32°C
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 27°C
A mix of clear and cloudy skies. Chance of a thunderstorm.
Saturday, July 26th, 2025
Overnight Temperature: 24°C
A mix of clear and cloudy skies with a chance of showers.
Morning Temperature: 30°C
Sunny with a slight chance of showers or thundershowers.
Afternoon Temperature: 33°C
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 26°C
Cloudy with a slight chance of showers or thundershowers.





 

  [ Local Weather Report ]
Roxana, IL 
5:50 PM  29°C
Overcast
 
Wood River, IL 
5:50 PM  29°C
Overcast
 
Edwardsville, IL 
5:50 PM  29°C
Overcast
 
Altamont, IL 
5:50 PM  29°C
Overcast
 
West Alton, MO 
5:50 PM  29°C
Overcast
 
Troy, IL 
 
Granite City, IL 
 
Bellefontaine Neighbors, MO 
5:51 PM  31°C
Partly Clear
 
Black Jack, MO 
5:51 PM  31°C
Partly Clear
 
Moline Acres, MO 
5:51 PM  31°C
Partly Clear

This WeatherCity Weather Forecast for Alton, 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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