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May 27th, 2026 :: 4:47 pm CDT   

Local Weather Report for
Mount Vernon
Illinois, United States

 Current Mount Vernon Weather Conditions Updated May 27th at 3:56 pm 
Temperature:77°F Dew Point:70°F
Barometer:29.98 inHg Wind:calm
Humidity:78.5% Visibility:0M
 
 Mount Vernon Weather Forecast Summary  
 
Today
May 27th
Thursday
May 28th
Friday
May 29th
Saturday
May 30th
Sunday
May 31st
Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
79°F
82°F
65°F
77°F
60°F
78°F
60°F
77°F
58°F
 
 Mount Vernon Detailed Weather Forecast  
 
Wednesday, May 27th, 2026
Evening Temperature: 73°F
Clear with a chance of showers or thundershowers.
Thursday, May 28th, 2026
Overnight Temperature: 66°F
Mostly clear. Windy at times.
Morning Temperature: 70°F
Mostly sunny. Windy at times.
Afternoon Temperature: 81°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Friday, May 29th, 2026
Overnight Temperature: 65°F
Mostly clear. Windy at times.
Morning Temperature: 64°F
Mostly sunny.
Afternoon Temperature: 76°F
Mostly sunny.
Evening Temperature: 69°F
Mostly clear.
Saturday, May 30th, 2026
Overnight Temperature: 61°F
Mostly clear.
Morning Temperature: 66°F
Mostly sunny.
Afternoon Temperature: 78°F
Mostly sunny. Windy at times.
Evening Temperature: 68°F
Mostly clear.
Sunday, May 31st, 2026
Overnight Temperature: 60°F
Mostly clear.
Morning Temperature: 64°F
Mostly sunny.
Afternoon Temperature: 76°F
Mostly cloudy.
Evening Temperature: 70°F
Mostly clear.
Monday, June 1st, 2026
Overnight Temperature: 62°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 78°F
A mix of sun and cloud with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 61°F
Clear with a chance of showers. Windy.
Tuesday, June 2nd, 2026
Overnight Temperature: 53°F
Clear. Windy at times.
Morning Temperature: 59°F
Sunny. Windy.
Afternoon Temperature: 72°F
Sunny. Slight chance of a thunderstorm. Windy.
Evening Temperature: 63°F
Clear. Windy at times.
Wednesday, June 3rd, 2026
Overnight Temperature: 52°F
Clear.
Morning Temperature: 59°F
Sunny. Windy at times.
Afternoon Temperature: 73°F
Sunny. Windy at times.
Evening Temperature: 65°F
Clear.
Thursday, June 4th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 64°F
Sunny.
Afternoon Temperature: 76°F
Sunny with cloudy periods.
Evening Temperature: 67°F
Clear with cloudy periods.





 

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This WeatherCity Weather Forecast for Mount Vernon, 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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