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

76°F

24°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 14 Jun 8:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 82 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 67. North wind 3 to 6 mph.

    Low: 67 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 84. North northeast wind around 5 mph.

    High: 84 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Light south southeast wind. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. South southwest wind 3 to 8 mph.

    High: 87 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 7 mph.

    Low: 73 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 60%.
Tonight
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 67. North wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 84. North northeast wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 68. Calm wind.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Light south southeast wind. Chance of precipitation is 30%.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. South southwest wind 3 to 8 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 7 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind 7 to 10 mph.
Juneteenth
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. West wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 69. Light and variable wind.
Friday
A slight chance of showers. Sunny, with a high near 89. Calm wind becoming southwest around 6 mph 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:
8:32 am CDT Jun 14, 2025
Forecast Valid:
9am CDT Jun 14, 2025-6pm CDT Jun 20, 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