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

54°F

12°C

Humidity 93%
Wind Speed NE 3 mph
Barometer 30.20 in (1023.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 4 Oct 9:56 pm CDT
Extended Forecast for

Sesser IL

  • Tonight

    Tonight: Clear, with a low around 52. Calm wind becoming north northeast around 6 mph after midnight.

    Low: 52 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Northeast wind 6 to 10 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 45. Light east northeast wind.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming south southeast around 5 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50. Calm wind.

    Low: 50 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. Light and variable wind.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming northeast 5 to 7 mph in the morning.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. Light east wind.

    Low: 55 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 52. Calm wind becoming north northeast around 6 mph after midnight.
Monday
Sunny, with a high near 77. Northeast wind 6 to 10 mph.
Monday Night
Clear, with a low around 45. Light east northeast wind.
Tuesday
Sunny, with a high near 79. Calm wind becoming south southeast around 5 mph.
Tuesday Night
Clear, with a low around 50. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Clear, with a low around 56. Light and variable wind.
Thursday
Sunny, with a high near 85. Calm wind becoming northeast 5 to 7 mph in the morning.
Thursday Night
Clear, with a low around 55. Light east wind.
Friday
Sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 55. East southeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 83. Light east wind becoming southeast 5 to 10 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 58. East southeast wind around 6 mph.
Sunday
A chance of showers. Partly sunny, with a high near 82. East wind 6 to 11 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:
9:51 pm CDT Oct 4, 2026
Forecast Valid:
10pm CDT Oct 4, 2026-6pm CDT Oct 11, 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