Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Partly Cloudy

85°F

29°C

Humidity 61%
Wind Speed S 14 G 22 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Jun 12:56 pm CDT
Extended Forecast for

4 Miles E Bonnie IL

Flood Watch until June 22, 07:00am
Lake Wind Advisory until June 21, 07:00pm
Click here for hazard details and duration
Flood Watch
Lake Wind Advisory
  •  
    Flood Watch until June 22, 07:00am
    Lake Wind Advisory until June 21, 07:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 85 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight, then a chance of showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall.  Low around 68. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%.

    Low: 68 °F

    Heavy Rain
    then Chance
    T-storms

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 7am.  Mostly cloudy, with a high near 79. North northwest wind 9 to 11 mph.

    High: 79 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. North wind 5 to 8 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Light east northeast wind.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers.  Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Mostly cloudy, with a steady temperature around 85. South wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight, then a chance of showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Low around 68. Southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Monday
A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, with a high near 79. North northwest wind 9 to 11 mph.
Monday Night
Mostly clear, with a low around 61. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 83. Light east northeast wind.
Tuesday Night
Mostly clear, with a low around 62. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind.
Wednesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 66. Calm wind.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light west wind.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 65. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Light and variable wind.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Light south southwest wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Light south southwest wind becoming southwest 5 to 9 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Bonnie IL
 38.2°N 88.84°W
1:06 pm CDT Jun 21, 2026
1pm CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database