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July 31st, 2025 :: 6:47 am CDT   

Local Weather Report for
Sullivan
Illinois, United States

 Sullivan Weather Forecast Summary  
 
Today
Jul 31st
Friday
Aug 1st
Saturday
Aug 2nd
Sunday
Aug 3rd
Monday
Aug 4th
Cloudy Cloudy Cloudy Cloudy Thundershowers
73°F
75°F
57°F
74°F
56°F
78°F
57°F
79°F
62°F
 
 Sullivan Detailed Weather Forecast  
 
Thursday, July 31st, 2025
Morning Temperature: 69°F
Cloudy. Windy at times.
Afternoon Temperature: 71°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 61°F
Clear. Windy at times.
Friday, August 1st, 2025
Overnight Temperature: 58°F
Clear.
Morning Temperature: 71°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 72°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 60°F
Cloudy.
Saturday, August 2nd, 2025
Overnight Temperature: 56°F
Cloudy.
Morning Temperature: 70°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 72°F
Sunny. Windy at times.
Evening Temperature: 60°F
Clear.
Sunday, August 3rd, 2025
Overnight Temperature: 58°F
Clear.
Morning Temperature: 73°F
Sunny. Windy at times.
Afternoon Temperature: 76°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 64°F
Cloudy.
Monday, August 4th, 2025
Overnight Temperature: 63°F
Cloudy.
Morning Temperature: 75°F
Cloudy. Chance of a thunderstorm.
Afternoon Temperature: 77°F
Cloudy with a chance of showers or thundershowers.
Evening Temperature: 67°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Tuesday, August 5th, 2025
Overnight Temperature: 66°F
Cloudy with showers likely.
Morning Temperature: 69°F
Cloudy with showers likely. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 73°F
Cloudy with showers likely. Chance of a thunderstorm.
Evening Temperature: 67°F
Clear with cloudy periods. Chance of a thunderstorm.
Wednesday, August 6th, 2025
Overnight Temperature: 64°F
Clear.
Morning Temperature: 77°F
Sunny with cloudy periods. Chance of a thunderstorm.
Afternoon Temperature: 79°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 69°F
Clear. Slight chance of a thunderstorm.
Thursday, August 7th, 2025
Overnight Temperature: 68°F
Cloudy.
Morning Temperature: 76°F
Cloudy with a chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 71°F
Cloudy with periods of rain. Slight chance of a thunderstorm.
Evening Temperature: 68°F
Cloudy with a chance of showers.
Friday, August 8th, 2025
Overnight Temperature: 68°F
A mix of cloudy and clear skies.
Morning Temperature: 81°F
Sunny with cloudy periods. Chance of a thunderstorm.
Afternoon Temperature: 85°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 77°F
Clear with a chance of showers or thundershowers.





 

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This WeatherCity Weather Forecast for Sullivan, 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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