National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

43°F

6°C

Humidity 71%
Wind Speed W 8 mph
Barometer 30.25 in (1025.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 5 Apr 7:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Sunny, with a high near 59. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 63. Light west wind becoming northwest 5 to 10 mph in the morning.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. North northeast wind around 7 mph.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. East northeast wind around 9 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East southeast wind around 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. East southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. South wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 59. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 63. Light west wind becoming northwest 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 38. North northeast wind around 7 mph.
Tuesday
Partly sunny, with a high near 54. East northeast wind around 9 mph.
Tuesday Night
Partly cloudy, with a low around 39. East southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 72. East southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. South wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 55. South wind around 5 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. South southwest wind 5 to 9 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 56. South wind around 6 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. South wind 6 to 9 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:
5:47 am CDT Apr 5, 2026
Forecast Valid:
8am CDT Apr 5, 2026-6pm CDT Apr 11, 2026
 
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Additional Resources

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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