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.

A Few Clouds

71°F

22°C

Humidity 84%
Wind Speed Calm
Barometer 30.01 in (1016.0 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 24 Jun 10:56 pm CDT
Extended Forecast for

Sesser IL

  • Tonight

    Tonight: A chance of showers between 1am and 5am, then a chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 67. Light south southwest wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 70. Light south southeast wind. Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 85. Southwest wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South southwest wind 3 to 7 mph. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.

    High: 88 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 95. South southwest wind 7 to 11 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. South wind 5 to 10 mph.

    Low: 74 °F

    Clear

Detailed Forecast

Tonight
A chance of showers between 1am and 5am, then a chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 67. Light south southwest wind. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph.
Thursday Night
Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 70. Light south southeast wind. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 85. Southwest wind 5 to 10 mph. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South southwest wind 3 to 7 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind around 5 mph.
Sunday
Sunny, with a high near 95. South southwest wind 7 to 11 mph.
Sunday Night
Clear, with a low around 74. South wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 97. South southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 75. South wind 5 to 9 mph becoming light south southwest after midnight.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming southwest around 5 mph in the morning.
Tuesday Night
Clear, with a low around 76. South wind around 6 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 99. Light southwest wind.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.07°N 89.07°W
Last Update:
9:51 pm CDT Jun 24, 2026
Forecast Valid:
11pm CDT Jun 24, 2026-6pm CDT Jul 1, 2026
 
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