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.

Fair

26°F

-3°C

Humidity 51%
Wind Speed NW 3 mph
Barometer 30.35 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 27 Jan 4:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around -2. Light north northwest wind.

    Low: -2 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 27. Wind chill values as low as -2. Calm wind becoming west 5 to 7 mph.

    High: 27 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Calm wind.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 23. Calm wind becoming northeast around 5 mph.

    High: 23 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Calm wind becoming north around 5 mph after midnight.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 16. North wind 5 to 9 mph.

    High: 16 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 0. North wind around 7 mph.

    Low: 0 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 17. Northwest wind 5 to 9 mph.

    High: 17 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 2. Light northwest wind.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around -2. Light north northwest wind.
Wednesday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 27. Wind chill values as low as -2. Calm wind becoming west 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 9. Calm wind.
Thursday
Mostly cloudy, with a high near 23. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly cloudy, with a low around 5. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny, with a high near 16. North wind 5 to 9 mph.
Friday Night
Partly cloudy, with a low around 0. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 17. Northwest wind 5 to 9 mph.
Saturday Night
Partly cloudy, with a low around 2. Light northwest wind.
Sunday
Partly sunny, with a high near 24. Light and variable wind becoming west southwest around 6 mph in the morning.
Sunday Night
A slight chance of snow showers. Mostly cloudy, with a low around 12. Light south southwest wind.
Monday
Partly sunny, with a high near 31. West wind 3 to 7 mph.
Monday Night
Mostly cloudy, with a low around 14. Light west northwest wind.
Tuesday
Partly sunny, with a high near 32. Calm wind becoming southwest around 6 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:
4:46 pm CST Jan 27, 2026
Forecast Valid:
5pm CST Jan 27, 2026-6pm CST Feb 3, 2026
 
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Additional Resources

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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