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

N/A

Humidity NA
Wind Speed Calm
Barometer 30.10 in
Dewpoint N/A
Visibility 10.00 mi
Last update 22 Nov 3:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 51. Light northwest wind.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Patchy fog between 9pm and 10pm. Otherwise, mostly clear, with a low around 40. Light west wind.

    Low: 40 °F

    Patchy Fog
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Light southeast wind.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers after noon. Mostly cloudy, with a high near 58. South southeast wind 3 to 8 mph.

    High: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers. Low around 49. Southeast wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 100%.

    Low: 49 °F

    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers. Mostly cloudy, with a high near 64. Southwest wind 6 to 9 mph.

    High: 64 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 47. West northwest wind 9 to 15 mph, with gusts as high as 22 mph.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 51. Light northwest wind.
Tonight
Patchy fog between 9pm and 10pm. Otherwise, mostly clear, with a low around 40. Light west wind.
Sunday
Sunny, with a high near 60. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 39. Light southeast wind.
Monday
A 40 percent chance of showers after noon. Mostly cloudy, with a high near 58. South southeast wind 3 to 8 mph.
Monday Night
Showers. Low around 49. Southeast wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 100%.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 64. Southwest wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 36. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 47. West northwest wind 9 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 27. West northwest wind 3 to 7 mph.
Thanksgiving Day
Sunny, with a high near 44. West northwest wind 5 to 9 mph becoming light west in the afternoon.
Thursday Night
Partly cloudy, with a low around 25. Light west northwest wind.
Friday
Mostly sunny, with a high near 46. Light and variable wind becoming west 5 to 7 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:
3:16 pm CST Nov 22, 2025
Forecast Valid:
4pm CST Nov 22, 2025-6pm CST Nov 28, 2025
 
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