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

81°F

27°C

Humidity 38%
Wind Speed SW 7 mph
Barometer 29.93 in (1013.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 26 Sep 1:56 pm CDT
Extended Forecast for

Bonnie ILSimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. Light north northwest wind.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 88. Calm wind becoming east northeast 5 to 8 mph in the morning.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Calm wind becoming northeast 5 to 8 mph in the morning.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. Light north northwest wind.
Tonight
Patchy fog after 3am. Otherwise, clear, with a low around 54. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 86. Light and variable wind.
Saturday Night
Clear, with a low around 56. Calm wind.
Sunday
Sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.
Sunday Night
Clear, with a low around 58. Calm wind.
Monday
Sunny, with a high near 88. Calm wind becoming east northeast 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 85. Calm wind becoming northeast 5 to 8 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 61. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 83. Northeast wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 59. East northeast wind 3 to 5 mph.
Thursday
Sunny, with a high near 83. East wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bonnie ILSimilar City Names
 38.2°N 88.92°W
Last Update:
1:30 pm CDT Sep 26, 2025
Forecast Valid:
2pm CDT Sep 26, 2025-6pm CDT Oct 2, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation