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January 20th, 2026 :: 4:54 pm CST   

Local Weather Report for
Mount Vernon
Illinois, United States

 Current Mount Vernon Weather Conditions Updated January 20th at 3:56 pm 
Overcast
Temperature:34°F Dew Point:7°F
Barometer:30.33 inHg Wind:N 21 Mph
Humidity:30.4% Visibility:0M
 
 Mount Vernon Weather Forecast Summary  
 
Today
Jan 20th
Wednesday
Jan 21st
Thursday
Jan 22nd
Friday
Jan 23rd
Saturday
Jan 24th
Mostly Sunny Cloudy Cloudy Cloudy Cloudy
33°F
45°F
29°F
37°F
25°F
24°F
9°F
18°F
8°F
 
 Mount Vernon Detailed Weather Forecast  
 
Tuesday, January 20th, 2026
Evening Temperature: 27°F
Clear with cloudy periods. Windy at times.
Wednesday, January 21st, 2026
Overnight Temperature: 30°F
Cloudy. Windy at times.
Morning Temperature: 40°F
Cloudy. Windy.
Afternoon Temperature: 34°F
Sunny.
Evening Temperature: 31°F
Clear. Windy at times.
Thursday, January 22nd, 2026
Overnight Temperature: 29°F
Cloudy.
Morning Temperature: 35°F
Cloudy. Windy at times.
Afternoon Temperature: 32°F
Cloudy.
Evening Temperature: 26°F
Cloudy. Windy at times.
Friday, January 23rd, 2026
Overnight Temperature: 21°F
Cloudy. Windy at times.
Morning Temperature: 13°F
Cloudy. Windy.
Afternoon Temperature: 11°F
Cloudy. Windy at times.
Evening Temperature: 9°F
Cloudy. Windy at times.
Saturday, January 24th, 2026
Overnight Temperature: 8°F
Cloudy. Windy at times.
Morning Temperature: 15°F
Cloudy. Windy at times.
Afternoon Temperature: 18°F
Cloudy.
Evening Temperature: 17°F
Cloudy.
Sunday, January 25th, 2026
Overnight Temperature: 15°F
Cloudy.
Morning Temperature: 22°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 19°F
Sunny. Windy at times.
Evening Temperature: 15°F
Clear.
Monday, January 26th, 2026
Overnight Temperature: 12°F
Clear.
Morning Temperature: 27°F
Sunny. Windy.
Afternoon Temperature: 30°F
Sunny. Windy at times.
Evening Temperature: 27°F
Clear. Windy at times.
Tuesday, January 27th, 2026
Overnight Temperature: 25°F
Clear. Windy at times.
Morning Temperature: 38°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 35°F
Sunny.
Evening Temperature: 30°F
Cloudy.
Wednesday, January 28th, 2026
Overnight Temperature: 28°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 30°F
Sunny. Windy.
Afternoon Temperature: 24°F
Sunny. Windy at times.
Evening Temperature: 21°F
A mix of clear and cloudy skies.





 

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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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