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July 15th, 2026 :: 5:10 pm CDT   

Local Weather Report for
Charleston
Illinois, United States

 Current Charleston Weather Conditions Updated July 15th at 3:53 pm 
Overcast
Temperature:90°F Dew Point:70°F
Barometer:30.06 inHg Wind:N 9 Mph
Humidity:52.3% Visibility:0M
 
 Charleston Weather Forecast Summary  
 
Today
Jul 15th
Thursday
Jul 16th
Friday
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Sunny Thundershowers Thundershowers Mostly Sunny Mostly Sunny
88°F
87°F
73°F
81°F
74°F
86°F
72°F
82°F
70°F
 
 Charleston Detailed Weather Forecast  
 
Wednesday, July 15th, 2026
Evening Temperature: 81°F
Clear. Chance of a thunderstorm.
Thursday, July 16th, 2026
Overnight Temperature: 74°F
Clear. Chance of a thunderstorm.
Morning Temperature: 79°F
Sunny with a chance of showers or thundershowers.
Afternoon Temperature: 86°F
Mostly sunny with a chance of showers or thundershowers.
Evening Temperature: 80°F
Mostly clear with showers likely. Chance of a thunderstorm.
Friday, July 17th, 2026
Overnight Temperature: 74°F
Clear with cloudy periods with a chance of showers or thundershowers.
Morning Temperature: 78°F
A mix of sun and cloud with a chance of showers or thundershowers.
Afternoon Temperature: 80°F
A mix of cloud and sun with showers likely. Chance of a thunderstorm.
Evening Temperature: 75°F
A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm.
Saturday, July 18th, 2026
Overnight Temperature: 73°F
Mostly clear. Slight chance of a thunderstorm.
Morning Temperature: 77°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 85°F
Sunny with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 80°F
Clear with a slight chance of showers or thundershowers.
Sunday, July 19th, 2026
Overnight Temperature: 73°F
Mostly clear with showers likely. Chance of a thunderstorm. Windy at times.
Morning Temperature: 73°F
Sunny with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 82°F
Sunny. Slight chance of a thunderstorm.
Evening Temperature: 75°F
Clear. Chance of a thunderstorm.
Monday, July 20th, 2026
Overnight Temperature: 69°F
Mostly clear.
Morning Temperature: 76°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 89°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 81°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Tuesday, July 21st, 2026
Overnight Temperature: 71°F
Clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 66°F
Sunny. Windy at times.
Afternoon Temperature: 73°F
Sunny. Windy at times.
Evening Temperature: 66°F
Mostly clear.
Wednesday, July 22nd, 2026
Overnight Temperature: 59°F
Mostly clear.
Morning Temperature: 65°F
Mostly sunny.
Afternoon Temperature: 76°F
A mix of sun and cloud.
Evening Temperature: 69°F
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 61°F
Clear with cloudy periods.
Morning Temperature: 64°F
Cloudy with sunny periods.
Afternoon Temperature: 74°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 72°F
Clear with cloudy periods with a slight chance of showers or thundershowers.





 

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3:53 PM  90°F
Overcast
 
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3:55 PM  91°F
 
 
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3:53 PM  88°F
Overcast

 
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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