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July 18th, 2026 :: 7:39 pm CDT   

Local Weather Report for
Charleston
Illinois, United States

 Current Charleston Weather Conditions Updated July 18th at 6:53 pm 
Mostly Clear
Temperature:84°F Dew Point:75°F
Barometer:29.89 inHg Wind:N 19 Mph
Humidity:74.5% Visibility:0M
 
 Charleston Weather Forecast Summary  
 
Today
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Tuesday
Jul 21st
Wednesday
Jul 22nd
Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny
86°F
81°F
66°F
84°F
64°F
85°F
70°F
78°F
62°F
 
 Charleston Detailed Weather Forecast  
 
Saturday, July 18th, 2026
Evening Temperature: 79°F
Clear with a chance of showers or thundershowers.
Sunday, July 19th, 2026
Overnight Temperature: 70°F
Clear with a chance of showers or thundershowers.
Morning Temperature: 70°F
Sunny.
Afternoon Temperature: 80°F
Sunny.
Evening Temperature: 73°F
Clear. Slight chance of a thunderstorm.
Monday, July 20th, 2026
Overnight Temperature: 65°F
Mostly clear.
Morning Temperature: 71°F
Sunny with cloudy periods.
Afternoon Temperature: 83°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 78°F
A mix of clear and cloudy skies. Chance of a thunderstorm.
Tuesday, July 21st, 2026
Overnight Temperature: 74°F
A mix of clear and cloudy skies with a chance of showers or thundershowers. Windy at times.
Morning Temperature: 79°F
A mix of sun and cloud. Chance of a thunderstorm. Windy.
Afternoon Temperature: 84°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Clear. Slight chance of a thunderstorm. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 66°F
Clear. Windy at times.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 77°F
Sunny with a slight chance of showers. Windy at times.
Evening Temperature: 66°F
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 56°F
Clear.
Morning Temperature: 63°F
Sunny.
Afternoon Temperature: 74°F
Sunny.
Evening Temperature: 67°F
Mostly clear.
Friday, July 24th, 2026
Overnight Temperature: 60°F
Mostly clear.
Morning Temperature: 64°F
Sunny with cloudy periods.
Afternoon Temperature: 70°F
Mostly cloudy.
Evening Temperature: 62°F
Cloudy with showers likely. Windy at times.
Saturday, July 25th, 2026
Overnight Temperature: 60°F
A mix of cloudy and clear skies with showers likely. Windy at times.
Morning Temperature: 64°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 78°F
A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Clear with cloudy periods. Chance of a thunderstorm.
Sunday, July 26th, 2026
Overnight Temperature: 72°F
Clear. Slight chance of a thunderstorm.
Morning Temperature: 76°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 87°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 83°F
Mostly clear. Chance of a thunderstorm.





 

  [ Local Weather Report ]
Mattoon, IL 
6:53 PM  84°F
Mostly Clear
 
Casey, IL 
 
Tuscola, IL 
 
Sullivan, IL 
 
Marshall, IL 
 
Paris, IL 
6:55 PM  84°F
 
 
Shelbyville, IL 
 
Effingham, IL 
6:55 PM  86°F
 
 
Newton, IL 
 
Champaign, IL 
6:50 PM  82°F
thunderstorm

 
This WeatherCity Weather Forecast for Charleston, 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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