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May 28th, 2026 :: 5:39 pm CDT   

Local Weather Report for
Vandalia
Illinois, United States

 Vandalia Weather Forecast Summary  
 
Today
May 28th
Friday
May 29th
Saturday
May 30th
Sunday
May 31st
Monday
Jun 1st
Mostly Sunny Mix of Sun and Cloud Mix of Sun and Cloud Mostly Sunny Sunny
81°F
75°F
60°F
76°F
62°F
75°F
56°F
80°F
59°F
 
 Vandalia Detailed Weather Forecast  
 
Thursday, May 28th, 2026
Evening Temperature: 71°F
Clear with cloudy periods. Slight chance of a thunderstorm. Windy at times.
Friday, May 29th, 2026
Overnight Temperature: 62°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 64°F
A mix of sun and cloud.
Afternoon Temperature: 74°F
A mix of cloud and sun.
Evening Temperature: 69°F
A mix of cloudy and clear skies.
Saturday, May 30th, 2026
Overnight Temperature: 63°F
A mix of cloudy and clear skies.
Morning Temperature: 66°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 76°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 68°F
Clear with cloudy periods. Windy at times.
Sunday, May 31st, 2026
Overnight Temperature: 58°F
Mostly clear. Windy at times.
Morning Temperature: 61°F
Mostly sunny. Windy at times.
Afternoon Temperature: 74°F
Mostly sunny.
Evening Temperature: 67°F
Mostly clear.
Monday, June 1st, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 67°F
Sunny.
Afternoon Temperature: 79°F
Sunny.
Evening Temperature: 72°F
Clear.
Tuesday, June 2nd, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 79°F
A mix of sun and cloud with a chance of showers. Slight chance of a thunderstorm.
Evening Temperature: 68°F
Clear with a slight chance of showers.
Wednesday, June 3rd, 2026
Overnight Temperature: 58°F
Mostly clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 77°F
Sunny.
Evening Temperature: 69°F
Mostly clear.
Thursday, June 4th, 2026
Overnight Temperature: 62°F
Mostly clear.
Morning Temperature: 69°F
Sunny. Windy at times.
Afternoon Temperature: 84°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Evening Temperature: 76°F
Clear with a slight chance of showers or thundershowers.
Friday, June 5th, 2026
Overnight Temperature: 69°F
Mostly clear.
Morning Temperature: 75°F
A mix of sun and cloud. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 87°F
A mix of sun and cloud. Chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Mostly cloudy with showers. Chance of a thunderstorm.





 

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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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