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

62°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.09 in (1019.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Aug 3:56 am CDT
Extended Forecast for

Sesser IL

  • Today

    Today: Sunny, with a high near 87. Light east wind.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of thunderstorms before 7am. Sunny, with a high near 88. Calm wind becoming north northwest 5 to 8 mph in the morning. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Light north wind.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Light east northeast wind.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. Light east wind.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Light east wind.
Tonight
Partly cloudy, with a low around 67. Calm wind.
Wednesday
Mostly sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.
Thursday
A slight chance of thunderstorms before 7am. Sunny, with a high near 88. Calm wind becoming north northwest 5 to 8 mph in the morning. Chance of precipitation is 10%.
Thursday Night
Mostly clear, with a low around 65. Light north wind.
Friday
Sunny, with a high near 88. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. Light east northeast wind.
Saturday
Sunny, with a high near 90. Light east wind.
Saturday Night
Mostly clear, with a low around 67. Light and variable wind.
Sunday
Sunny, with a high near 95. Calm wind becoming south southwest 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 72. South wind around 6 mph.
Monday
Sunny and hot, with a high near 97. South southwest wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
2:00 am CDT Aug 25, 2026
Forecast Valid:
4am CDT Aug 25, 2026-6pm CDT Aug 31, 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