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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Partly Cloudy with Haze

92°F

33°C

Humidity 58%
Wind Speed SE 7 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 75°F (24°C)
Visibility 6.00 mi
Heat Index103°F (39°C)
Last update 14 Aug 1:56 pm CDT
Extended Forecast for

Bonnie ILSimilar City Names

Extreme Heat Warning August 14, 02:13pm until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 14, 02:13pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. Light southeast wind.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming southwest around 5 mph in the morning.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98. West northwest wind 3 to 7 mph.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. Light north northeast wind.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 94. Heat index values as high as 109. South wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 76. Light southeast wind.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming southwest around 5 mph in the morning.
Saturday Night
Clear, with a low around 76. Calm wind becoming south southwest around 5 mph after midnight.
Sunday
Sunny and hot, with a high near 98. West northwest wind 3 to 7 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming north northwest 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 67. Light north northeast wind.
Tuesday
Mostly sunny, with a high near 90. Calm wind.
Tuesday Night
Mostly clear, with a low around 72. Light and variable wind.
Wednesday
Mostly sunny, with a high near 95. South wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. North wind 5 to 7 mph.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. North wind 3 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bonnie ILSimilar City Names
 38.2°N 88.92°W
Last Update:
1:26 pm CDT Aug 14, 2026
Forecast Valid:
2pm CDT Aug 14, 2026-6pm CDT Aug 20, 2026
 
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Additional Resources

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Chance of Precipitation