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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

69°F

21°C

Humidity 55%
Wind Speed SW 18 mph
Barometer 29.69 in (1005.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 4 May 11:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 60. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Steady temperature around 61. South wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 90%.

    High: 61 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 3am, then a slight chance of showers between 3am and 5am. Low around 46. North northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 7am. Partly sunny, with a high near 61. North northeast wind 7 to 9 mph.

    High: 61 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. North wind 3 to 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. Light and variable wind.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 72. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 72 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52. South southwest wind 6 to 8 mph.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 60. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Steady temperature around 61. South wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 3am, then a slight chance of showers between 3am and 5am. Low around 46. North northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Wednesday
A 20 percent chance of showers after 7am. Partly sunny, with a high near 61. North northeast wind 7 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 43. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 64. Calm wind becoming north northwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 45. Light and variable wind.
Friday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 72. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52. South southwest wind 6 to 8 mph.
Saturday
Sunny, with a high near 77. West southwest wind 5 to 8 mph.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. South wind 3 to 6 mph.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 75. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. North wind around 7 mph.
Monday
A slight chance of showers. Mostly sunny, with a high near 71. North northwest wind 6 to 10 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:
11:41 pm CDT May 4, 2026
Forecast Valid:
12am CDT May 5, 2026-6pm CDT May 11, 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