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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

78°F

26°C

Humidity 43%
Wind Speed NE 10 mph
Barometer 30.08 in (1018.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 25 May 2:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 81. East northeast wind around 7 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 61. Light east northeast wind.

    Low: 61 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. Calm wind. Chance of precipitation is 60%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 8 mph in the morning.

    High: 83 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. East northeast wind 3 to 6 mph.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 76. East northeast wind 6 to 8 mph.

    High: 76 °F

    Slight Chance
    Showers

Detailed Forecast

Memorial Day
Partly sunny, with a high near 81. East northeast wind around 7 mph.
Tonight
Increasing clouds, with a low around 61. Light east northeast wind.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. Calm wind. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 64. Calm wind.
Thursday
Partly sunny, with a high near 83. Calm wind becoming east northeast 5 to 8 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 64. East northeast wind 3 to 6 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 76. East northeast wind 6 to 8 mph.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 61. East northeast wind 3 to 6 mph.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77. Northeast wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 59. Northeast wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 78. Northeast wind 7 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
1:26 pm CDT May 25, 2026
Forecast Valid:
3pm CDT May 25, 2026-6pm CDT May 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation