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

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

36°F

2°C

Humidity 55%
Wind Speed W 7 mph
Barometer 30.21 in (1023.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 21 Feb 1:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 41. Northwest wind 5 to 8 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 23. Northwest wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 32. Northwest wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Northwest wind around 14 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 33. Northwest wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Light and variable wind.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. South southwest wind 5 to 15 mph, with gusts as high as 24 mph.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. West southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 58 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 41. Northwest wind 5 to 8 mph.
Tonight
Mostly clear, with a low around 23. Northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 32. Northwest wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 17. Northwest wind around 14 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 33. Northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 18. Light and variable wind.
Tuesday
Partly sunny, with a high near 49. South southwest wind 5 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 41. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 58. West southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 36. Southwest wind around 9 mph becoming north after midnight. Winds could gust as high as 18 mph.
Thursday
A chance of showers. Mostly sunny, with a high near 50. Northwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 28. Northwest wind around 6 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 56. South southwest wind 5 to 9 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:
1:42 pm CST Feb 21, 2026
Forecast Valid:
2pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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Additional Resources

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Chance of Precipitation