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.

Fair

55°F

13°C

Humidity 62%
Wind Speed Calm
Barometer 30.01 in (1016.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 May 12:56 am CDT
Extended Forecast for

Bonnie IL

  • Overnight

    Overnight: Partly cloudy, with a low around 52. Calm wind becoming south southeast around 5 mph.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 82. South southeast wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 82 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 85. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. South wind around 8 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89. South wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South wind 11 to 18 mph, with gusts as high as 25 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. South wind around 14 mph, with gusts as high as 22 mph.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 52. Calm wind becoming south southeast around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 82. South southeast wind 7 to 15 mph, with gusts as high as 23 mph.
Friday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 85. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 66. South wind around 8 mph.
Sunday
Sunny, with a high near 89. South wind 8 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 70. South wind 10 to 13 mph, with gusts as high as 21 mph.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South wind 11 to 18 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. South wind around 14 mph, with gusts as high as 22 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. South southwest wind 13 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South southwest wind 5 to 11 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. North wind around 8 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. North northeast wind 3 to 7 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Northeast wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bonnie IL
 38.2°N 88.92°W
Last Update:
1:46 am CDT May 15, 2026
Forecast Valid:
1am CDT May 15, 2026-6pm CDT May 21, 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