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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed NE 5 mph
Barometer 30.20 in (1023.4 mb)
Dewpoint 38°F (3°C)
Visibility 1.25 mi
Wind Chill35°F (2°C)
Last update 2 Mar 9:56 pm CST
Extended Forecast for

Sesser IL

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Low around 39. Light east wind. Chance of precipitation is 80%.

    Low: 39 °F

    Patchy Fog
    then Showers
    and Patchy
    Fog

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 62. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%.

    High: 62 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 53. East northeast wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.

    Low: 53 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 71. Southeast wind 6 to 11 mph becoming east northeast in the morning. Chance of precipitation is 90%.

    High: 71 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. South wind 7 to 10 mph. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 71. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. South wind around 7 mph. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 79. South southwest wind 8 to 17 mph, with gusts as high as 24 mph.

    High: 79 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Low around 39. Light east wind. Chance of precipitation is 80%.
Tuesday
Showers and thunderstorms likely, mainly before noon, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 62. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 53. East northeast wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 71. Southeast wind 6 to 11 mph becoming east northeast in the morning. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. South wind 7 to 10 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 71. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. South wind around 7 mph. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 79. South southwest wind 8 to 17 mph, with gusts as high as 24 mph.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.
Saturday
Showers and possibly a thunderstorm before noon, then showers likely. Cloudy, with a high near 71. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. West wind around 6 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 66. Southwest wind 5 to 8 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 52. Southwest wind around 6 mph.
Monday
A chance of showers. Mostly sunny, with a high near 70. Southwest wind 6 to 10 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:
9:32 pm CST Mar 2, 2026
Forecast Valid:
10pm CST Mar 2, 2026-6pm CDT Mar 9, 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