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.

Partly Cloudy

31°F

-1°C

Humidity 56%
Wind Speed SW 9 mph
Barometer 30.25 in (1025.4 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 30 Dec 2:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 34. West southwest wind 7 to 9 mph.

    High: 34 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. Southwest wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. West wind 6 to 10 mph.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. Light and variable wind.

    Low: 25 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 38. Light and variable wind.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 43. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. North northeast wind 3 to 5 mph.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41. North northeast wind around 5 mph becoming calm in the afternoon.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 34. West southwest wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 26. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 41. West wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 25. Light and variable wind.
New Year's Day
Mostly sunny, with a high near 38. Light and variable wind.
Thursday Night
Mostly cloudy, with a low around 29. Calm wind.
Friday
Mostly cloudy, with a high near 43. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 25. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 41. North northeast wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly clear, with a low around 25. Calm wind.
Sunday
Partly sunny, with a high near 47. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 33. West southwest wind around 6 mph.
Monday
Partly sunny, with a high near 51. West southwest wind 6 to 8 mph becoming northwest in the afternoon.
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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:
2:26 pm CST Dec 30, 2025
Forecast Valid:
3pm CST Dec 30, 2025-6pm CST Jan 5, 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