National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

A Few Clouds

92°F

33°C

Humidity 34%
Wind Speed S 15 G 23 mph
Barometer 29.91 in (1012.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 12 Oct 2:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. Southwest wind around 15 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. Southwest wind 6 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Southwest wind 6 to 11 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly clear, with a low around 71. South southwest wind 5 to 7 mph.

    Low: 71 °F

    Clear then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 83. Southwest wind 3 to 6 mph. Chance of precipitation is 90%.

    High: 83 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph.

    Low: 55 °F

    Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 66. Breezy, with a north northwest wind 18 to 24 mph, with gusts as high as 32 mph.

    High: 66 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Sunny, with a high near 92. Southwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 62. Southwest wind 6 to 9 mph.
Tuesday
Sunny, with a high near 95. Southwest wind 6 to 11 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly clear, with a low around 71. South southwest wind 5 to 7 mph.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 83. Southwest wind 3 to 6 mph. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph.
Friday
Partly sunny, with a high near 66. Breezy, with a north northwest wind 18 to 24 mph, with gusts as high as 32 mph.
Friday Night
Mostly clear, with a low around 40. North wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 63. Northeast wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 38. Calm wind.
Sunday
Sunny, with a high near 71. Calm wind becoming south 5 to 8 mph in the morning.
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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:
2:36 pm CDT Oct 12, 2026
Forecast Valid:
3pm CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
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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