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July 16th, 2026 :: 2:44 pm CDT   

Local Weather Report for
Vandalia
Illinois, United States

 Vandalia Weather Forecast Summary  
 
Today
Jul 16th
Friday
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Mostly Sunny Thundershowers Sunny Mostly Sunny Mostly Sunny
89°F
88°F
74°F
89°F
72°F
86°F
73°F
91°F
70°F
 
 Vandalia Detailed Weather Forecast  
 
Thursday, July 16th, 2026
Afternoon Temperature: 88°F
Mostly sunny with a slight chance of showers or thundershowers.
Evening Temperature: 79°F
A mix of cloudy and clear skies with a chance of showers or thundershowers.
Friday, July 17th, 2026
Overnight Temperature: 74°F
Clear. Chance of a thunderstorm.
Morning Temperature: 79°F
Sunny with a chance of showers or thundershowers.
Afternoon Temperature: 87°F
Sunny with showers likely. Chance of a thunderstorm.
Evening Temperature: 80°F
Mostly clear with a chance of showers or thundershowers.
Saturday, July 18th, 2026
Overnight Temperature: 73°F
Clear with a chance of showers. Slight chance of a thunderstorm.
Morning Temperature: 77°F
Sunny with a chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 88°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 81°F
Clear. Chance of a thunderstorm.
Sunday, July 19th, 2026
Overnight Temperature: 74°F
Mostly clear with a chance of showers or thundershowers.
Morning Temperature: 78°F
Sunny with a chance of showers or thundershowers.
Afternoon Temperature: 86°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.
Monday, July 20th, 2026
Overnight Temperature: 72°F
Mostly clear with a chance of showers.
Morning Temperature: 75°F
Mostly sunny with a chance of showers or thundershowers.
Afternoon Temperature: 91°F
Mostly sunny with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 84°F
Mostly clear. Chance of a thunderstorm.
Tuesday, July 21st, 2026
Overnight Temperature: 78°F
Clear. Chance of a thunderstorm.
Morning Temperature: 77°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 80°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 69°F
A mix of cloudy and clear skies. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 64°F
Cloudy with clear periods. Windy at times.
Morning Temperature: 65°F
Mostly cloudy.
Afternoon Temperature: 75°F
Mostly sunny.
Evening Temperature: 69°F
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 62°F
Clear.
Morning Temperature: 68°F
Mostly sunny.
Afternoon Temperature: 79°F
Mostly sunny.
Evening Temperature: 73°F
A mix of cloudy and clear skies.
Friday, July 24th, 2026
Overnight Temperature: 69°F
Cloudy with clear periods.
Morning Temperature: 69°F
Cloudy with sunny periods.
Afternoon Temperature: 79°F
Mostly sunny. Slight chance of a thunderstorm.
Evening Temperature: 76°F
Mostly clear. Chance of a thunderstorm.





 

  [ Local Weather Report ]
Greenville, IL 
 
Salem, IL 
1:55 PM  88°F
Overcast
 
Hillsboro, IL 
 
Pana, IL 
 
Centralia, IL 
1:55 PM  88°F
Overcast
 
Effingham, IL 
1:55 PM  90°F
Overcast
 
Wamac, IL 
1:55 PM  88°F
Overcast
 
Breese, IL 
 
Litchfield, IL 
1:55 PM  81°F
Overcast
 
Highland, IL 

 
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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