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July 27th, 2026 :: 8:15 pm CDT   

Local Weather Report for
Vandalia
Illinois, United States

 Vandalia Weather Forecast Summary  
 
Today
Jul 27th
Tuesday
Jul 28th
Wednesday
Jul 29th
Thursday
Jul 30th
Friday
Jul 31st
Mostly Sunny Mostly Sunny Sunny Mostly Sunny Showers
93°F
84°F
74°F
82°F
62°F
84°F
64°F
73°F
66°F
 
 Vandalia Detailed Weather Forecast  
 
Monday, July 27th, 2026
Evening Temperature: 86°F
Mostly clear. Chance of a thunderstorm.
Tuesday, July 28th, 2026
Overnight Temperature: 75°F
Mostly clear.
Morning Temperature: 79°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 82°F
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Evening Temperature: 78°F
Clear. Chance of a thunderstorm.
Wednesday, July 29th, 2026
Overnight Temperature: 66°F
Clear.
Morning Temperature: 68°F
Sunny.
Afternoon Temperature: 81°F
Sunny. Windy at times.
Evening Temperature: 72°F
Clear.
Thursday, July 30th, 2026
Overnight Temperature: 65°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 84°F
Mostly sunny.
Evening Temperature: 77°F
A mix of clear and cloudy skies. Slight chance of a thunderstorm.
Friday, July 31st, 2026
Overnight Temperature: 72°F
A mix of cloudy and clear skies.
Morning Temperature: 68°F
Cloudy with showers.
Afternoon Temperature: 68°F
Cloudy with sunny periods with a few showers. Windy at times.
Evening Temperature: 67°F
A mix of cloudy and clear skies with a chance of showers. Windy at times.
Saturday, August 1st, 2026
Overnight Temperature: 65°F
A mix of clear and cloudy skies with a chance of showers. Windy at times.
Morning Temperature: 66°F
Cloudy with sunny periods with a chance of showers. Windy at times.
Afternoon Temperature: 75°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 68°F
Mostly clear. Windy at times.
Sunday, August 2nd, 2026
Overnight Temperature: 63°F
Mostly clear. Windy at times.
Morning Temperature: 68°F
Sunny. Windy at times.
Afternoon Temperature: 80°F
Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Clear. Chance of a thunderstorm.
Monday, August 3rd, 2026
Overnight Temperature: 67°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 83°F
Sunny. Slight chance of a thunderstorm.
Evening Temperature: 75°F
Clear. Chance of a thunderstorm.
Tuesday, August 4th, 2026
Overnight Temperature: 69°F
Clear.
Morning Temperature: 74°F
Sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 86°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.





 

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6:55 PM  90°F
 
 
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6:55 PM  84°F
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6:55 PM  86°F
light rain
 
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This WeatherCity Weather Forecast for Vandalia, 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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