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.

40°F

4°C

Humidity 89%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 19 Mar 12:56 am CDT
Extended Forecast for

Sesser IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 46. South southwest wind 3 to 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 3 to 6 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Southwest wind 6 to 10 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Southwest wind around 6 mph becoming light and variable after midnight.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Calm wind becoming south southwest 5 to 7 mph in the evening.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 83. South southwest wind 9 to 15 mph, with gusts as high as 22 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. West southwest wind around 15 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 46. South southwest wind 3 to 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 51. Calm wind becoming south southwest around 6 mph after midnight.
Friday
Sunny, with a high near 79. Southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 52. Southwest wind around 6 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 78. Light and variable wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Calm wind becoming south southwest 5 to 7 mph in the evening.
Sunday
Sunny, with a high near 83. South southwest wind 9 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 41. West southwest wind around 15 mph becoming north after midnight. Winds could gust as high as 24 mph.
Monday
Sunny, with a high near 56. North wind 10 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 35. East northeast wind around 7 mph.
Tuesday
Partly sunny, with a high near 59. East southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 39. East wind around 5 mph.
Wednesday
Mostly sunny, with a high near 69. East wind 6 to 10 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
1:26 am CDT Mar 19, 2026
Forecast Valid:
1am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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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