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.

A Few Clouds

N/A

Humidity NA
Wind Speed Calm
Barometer 30.09 in
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Nov 3:56 am CST
Extended Forecast for

Sesser IL

  • Today

    Today: Sunny, with a high near 61. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Steady temperature around 52. Southeast wind 8 to 10 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Chance
    T-storms then
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Partly sunny, with a high near 72. South wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 48. North northeast wind around 6 mph.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62. North northeast wind 3 to 5 mph.

    High: 62 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 67. East southeast wind 6 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 56. South southwest wind 7 to 10 mph.

    Low: 56 °F

    Showers

  • Friday

    Friday: Showers likely. Mostly cloudy, with a high near 67. South wind 10 to 13 mph.

    High: 67 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 61. Light east wind becoming southeast 5 to 10 mph in the morning.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Steady temperature around 52. Southeast wind 8 to 10 mph. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Partly sunny, with a high near 72. South wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 48. North northeast wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 62. North northeast wind 3 to 5 mph.
Wednesday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind becoming east southeast around 5 mph after midnight.
Thursday
Showers and possibly a thunderstorm. High near 67. East southeast wind 6 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 56. South southwest wind 7 to 10 mph.
Friday
Showers likely. Mostly cloudy, with a high near 67. South wind 10 to 13 mph.
Friday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 46. West southwest wind 7 to 9 mph becoming northwest in the evening.
Saturday
Partly sunny, with a high near 58. Northwest wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 40. Northwest wind 3 to 5 mph.
Sunday
A slight chance of showers. Mostly sunny, with a high near 58. West wind 3 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
3:16 am CST Nov 17, 2025
Forecast Valid:
4am CST Nov 17, 2025-6pm CST Nov 23, 2025
 
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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