Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Partly Cloudy

63°F

17°C

Humidity 38%
Wind Speed N 3 mph
Barometer 30.00 in (1016.3 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 28 Feb 3:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 65. South southwest wind around 6 mph.

    High: 65 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 20 mph.  Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 47. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 47 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain showers before 9pm, then rain and snow showers likely.  Cloudy, with a low around 34. East northeast wind 7 to 9 mph.  Chance of precipitation is 60%.

    Low: 34 °F

    Rain/Snow
    Likely

  • Monday

    Monday: Showers likely, mainly before noon.  Cloudy, with a high near 46. East wind 7 to 9 mph.  Chance of precipitation is 60%.

    High: 46 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight.  Cloudy, with a low around 41. East wind 5 to 8 mph becoming south after midnight.  Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 3pm.  Cloudy, with a high near 66. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely.  Cloudy, with a low around 55. South wind 6 to 8 mph.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 69. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 65. South southwest wind around 6 mph.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Light and variable wind becoming north 6 to 11 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 47. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of rain showers before 9pm, then rain and snow showers likely. Cloudy, with a low around 34. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 7 to 9 mph. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 41. East wind 5 to 8 mph becoming south after midnight. Chance of precipitation is 60%.
Tuesday
Showers likely, with thunderstorms also possible after 3pm. Cloudy, with a high near 66. South southwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Cloudy, with a low around 55. South wind 6 to 8 mph.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind around 8 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South southwest wind around 7 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
3:51 pm CST Feb 28, 2026
4pm CST Feb 28, 2026-6pm CST Mar 6, 2026
 
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Additional Resources

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Hourly Weather Forecast

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