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.

Partly Cloudy

N/A

Humidity NA
Wind Speed SE 3 mph
Barometer 30.38 in
Dewpoint N/A
Visibility 10.00 mi
Last update 28 Nov 9:56 pm CST
Extended Forecast for

Mount Vernon IL

Winter Weather Advisory November 29, 06:00am until November 30, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A 50 percent chance of snow, mainly after 4am. Cloudy, with a low around 28. East southeast wind 3 to 8 mph.

    Low: 28 °F

    Cloudy then
    Chance Snow

  • Saturday

    Saturday: Snow, possibly mixed with sleet before 1pm, then rain, snow, and sleet between 1pm and 2pm, then rain after 2pm. High near 40. Southeast wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow and sleet accumulation of 1 to 3 inches possible.

    High: 40 °F

    Snow then
    Wintry Mix

  • Saturday Night

    Saturday Night: Rain likely before midnight, then a slight chance of rain and snow showers between midnight and 3am. Cloudy, with a low around 26. South wind 15 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 26 °F

    Rain Likely
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 31. West northwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 31 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. North northwest wind 5 to 8 mph becoming light and variable after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow showers after noon. Cloudy, with a high near 32. East northeast wind 3 to 5 mph.

    High: 32 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly before midnight. Cloudy, with a low around 21. Light north northwest wind. Chance of precipitation is 60%.

    Low: 21 °F

    Snow Showers
    Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 32. Northwest wind 3 to 6 mph.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of snow, mainly after 4am. Cloudy, with a low around 28. East southeast wind 3 to 8 mph.
Saturday
Snow, possibly mixed with sleet before 1pm, then rain, snow, and sleet between 1pm and 2pm, then rain after 2pm. High near 40. Southeast wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow and sleet accumulation of 1 to 3 inches possible.
Saturday Night
Rain likely before midnight, then a slight chance of rain and snow showers between midnight and 3am. Cloudy, with a low around 26. South wind 15 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday
Mostly cloudy, with a high near 31. West northwest wind 10 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 20. North northwest wind 5 to 8 mph becoming light and variable after midnight.
Monday
A 20 percent chance of snow showers after noon. Cloudy, with a high near 32. East northeast wind 3 to 5 mph.
Monday Night
Snow showers likely, mainly before midnight. Cloudy, with a low around 21. Light north northwest wind. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 32. Northwest wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 17. Calm wind.
Wednesday
Mostly sunny, with a high near 40. Calm wind becoming south southwest 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 21. Light and variable wind becoming west northwest around 5 mph after midnight.
Thursday
Partly sunny, with a high near 34. Northwest wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around 20. Calm wind becoming south southeast around 5 mph after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 39. South southwest wind 5 to 8 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:
10:26 pm CST Nov 28, 2025
Forecast Valid:
10pm CST Nov 28, 2025-6pm CST Dec 5, 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