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.

Light Rain

80°F

27°C

Humidity 74%
Wind Speed S 7 mph
Barometer 29.94 in (1013.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Aug 2:56 pm CDT
Extended Forecast for

3 Miles E Mount Vernon IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 83. Light southwest wind.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 10 percent chance of showers before 7am. Partly sunny, with a high near 85. Light north northeast wind.

    High: 85 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 83. Light southwest wind.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.
Thursday
A 10 percent chance of showers before 7am. Partly sunny, with a high near 85. Light north northeast wind.
Thursday Night
Partly cloudy, with a low around 65. Calm wind.
Friday
Sunny, with a high near 87. Calm wind.
Friday Night
Mostly clear, with a low around 65. Calm wind.
Saturday
Mostly sunny, with a high near 87. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 63. Calm wind.
Sunday
Mostly sunny, with a high near 85. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 62. Calm wind.
Monday
A slight chance of showers. Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Light east wind.
Tuesday
Mostly sunny, with a high near 88. Calm wind becoming south southeast around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Mount Vernon IL
 38.33°N 88.86°W
Last Update:
1:26 pm CDT Aug 19, 2026
Forecast Valid:
3pm CDT Aug 19, 2026-6pm CDT Aug 25, 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