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.

Overcast and Breezy

72°F

22°C

Humidity 82%
Wind Speed SW 21 G 28 mph
Barometer 29.73 in (1006.5 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 11 Mar 3:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 70. South southwest wind around 9 mph, with gusts as high as 29 mph.

    Low: 70 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms before 4pm, then a chance of showers. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 14 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    High: 67 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 31. North northwest wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 31 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 54. Northwest wind 5 to 9 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 25 mph.

    Low: 41 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 62. Southwest wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. Northwest wind around 5 mph becoming light and variable.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind 6 to 10 mph becoming south southeast in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Southeast wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 70. South southwest wind around 9 mph, with gusts as high as 29 mph.
Wednesday
Showers and thunderstorms before 4pm, then a chance of showers. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 14 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 31. North northwest wind 8 to 17 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 54. Northwest wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 41. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 25 mph.
Friday
Partly sunny, with a high near 62. Southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 37. Northwest wind around 5 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 64. East wind 6 to 10 mph becoming south southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 52. Southeast wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday
A chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 67. Breezy, with a south wind 16 to 23 mph, with gusts as high as 32 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 39. Northwest wind 16 to 18 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 20. Northwest wind 6 to 10 mph.
Tuesday
Partly sunny, with a high near 42. West northwest wind 5 to 8 mph becoming southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
3:26 am CDT Mar 11, 2026
Forecast Valid:
4am CDT Mar 11, 2026-6pm CDT Mar 17, 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