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

58°F

14°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1016.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 8:56 pm CDT
Extended Forecast for

Bonnie IL

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. Light south southwest wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 18 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66. Southwest wind 7 to 9 mph.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Southwest wind 7 to 13 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. South southwest wind 5 to 7 mph.

    Low: 69 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 86. Southwest wind 3 to 7 mph. Chance of precipitation is 90%.

    High: 86 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Light and variable wind. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. East northeast wind 5 to 11 mph becoming south southeast in the afternoon.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 7 to 14 mph becoming west northwest after midnight.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Light and variable wind.
Columbus Day
Sunny, with a high near 92. Light south southwest wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Clear, with a low around 66. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 94. Southwest wind 7 to 13 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. South southwest wind 5 to 7 mph.
Wednesday
Showers and possibly a thunderstorm. High near 86. Southwest wind 3 to 7 mph. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Light and variable wind. Chance of precipitation is 60%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. East northeast wind 5 to 11 mph becoming south southeast in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 7 to 14 mph becoming west northwest after midnight.
Friday
Partly sunny, with a high near 69. Breezy, with a northwest wind 17 to 24 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 39. Breezy, with a north northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight.
Saturday
Sunny, with a high near 61. North wind 10 to 14 mph.
Saturday Night
Clear, with a low around 35. Light and variable wind.
Sunday
Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bonnie IL
 38.2°N 88.89°W
Last Update:
8:52 pm CDT Oct 11, 2026
Forecast Valid:
9pm CDT Oct 11, 2026-6pm CDT Oct 18, 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