Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

41°F

5°C

Humidity 65%
Wind Speed SW 7 mph
Barometer 29.68 in (1005.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 25 Feb 3:56 am CST
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Mostly cloudy, with a high near 52. Calm wind becoming north northwest around 5 mph.

    High: 52 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers after midnight.  Mostly cloudy, with a low around 35. Calm wind becoming northeast around 6 mph after midnight.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 52. East northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. South southwest wind 5 to 7 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Southwest wind 5 to 9 mph becoming east in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after midnight.  Mostly cloudy, with a low around 34. North northeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, mainly after noon.  Mostly cloudy, with a high near 49. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 49 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 52. Calm wind becoming north northwest around 5 mph.
Tonight
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 35. Calm wind becoming northeast around 6 mph after midnight.
Thursday
Mostly sunny, with a high near 52. East northeast wind around 6 mph becoming light and variable in the afternoon.
Thursday Night
Mostly clear, with a low around 33. Calm wind.
Friday
Sunny, with a high near 64. Calm wind becoming south southwest 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 42. South southwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 63. Southwest wind 5 to 9 mph becoming east in the afternoon.
Saturday Night
A slight chance of showers after midnight. Mostly cloudy, with a low around 34. North northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 49. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Sunday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Cloudy, with a low around 34. East northeast wind around 9 mph, with gusts as high as 18 mph.
Monday
A chance of showers. Mostly cloudy, with a high near 45. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 32. Northeast wind around 7 mph.
Tuesday
A chance of showers. Mostly cloudy, with a high near 49. East northeast wind 6 to 8 mph becoming west in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
12:46 am CST Feb 25, 2026
4am CST Feb 25, 2026-6pm CST Mar 3, 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