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.

39°F

4°C

Humidity 67%
Wind Speed NE 7 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 14 Mar 7:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Mostly sunny, with a high near 64. Southeast wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. South wind 7 to 14 mph, with gusts as high as 25 mph.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 18 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 70%.

    High: 70 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 24. Breezy, with a south wind 23 to 26 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.

    Low: 24 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 21 to 23 mph, with gusts as high as 36 mph.

    High: 30 °F

    Slight Chance
    Snow Showers
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 29 mph.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 36. West wind around 7 mph.

    High: 36 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 27. Light south wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 24 mph.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 58. South southwest wind 13 to 16 mph, with gusts as high as 25 mph.

    High: 58 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 64. Southeast wind 7 to 11 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around 52. South wind 7 to 14 mph, with gusts as high as 25 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 18 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 24. Breezy, with a south wind 23 to 26 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 21 to 23 mph, with gusts as high as 36 mph.
Monday Night
Partly cloudy, with a low around 13. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 36. West wind around 7 mph.
Tuesday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 27. Light south wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 24 mph.
Wednesday
Partly sunny, with a high near 58. South southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 39. South southwest wind 3 to 6 mph.
Thursday
Sunny, with a high near 69. Southwest wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 46. Calm wind becoming south southwest around 6 mph in the evening.
Friday
Sunny, with a high near 69. Southwest wind 6 to 9 mph becoming west 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:
1:26 am CDT Mar 14, 2026
Forecast Valid:
8am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation