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.

Mostly Cloudy

87°F

31°C

Humidity 51%
Wind Speed Calm
Barometer 30.05 in (1017.5 mb)
Dewpoint 67°F (19°C)
Visibility 7.00 mi
Heat Index90°F (32°C)
Last update 3 Jul 11:56 am CDT
Extended Forecast for

Sesser IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. Calm wind.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 92. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 71. Light southeast wind.

    Low: 71 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. South wind around 6 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West southwest wind 3 to 8 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. West wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 91. Calm wind.
Tonight
Mostly clear, with a low around 71. Calm wind.
Independence Day
Sunny, with a high near 92. Calm wind becoming south southeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 71. Light southeast wind.
Saturday
Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 73. South wind around 6 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West southwest wind 3 to 8 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. West wind around 6 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light east northeast wind.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. West northwest wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. West northwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
12:00 pm CDT Jul 3, 2025
Forecast Valid:
12pm CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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Additional Resources

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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