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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

28°C

82°F

Humidity 77%
Wind Speed SE 7 km/h
Barometer 1017.5 mb (30.05 in)
Dewpoint 23°C (74°F)
Visibility 16 km
Heat Index31°C (88°F)
Last update 13 Jul 8:56 am CDT
Extended Forecast for

Sesser IL

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 33. Calm wind becoming south southwest 5 to 8 km/h in the afternoon. Chance of precipitation is 80%.

    High: 33 °C

    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Patchy fog after 11pm. Low around 22. Calm wind. Chance of precipitation is 80%.

    Low: 22 °C

    Showers and
    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Areas of fog before 8am. Otherwise, partly sunny, with a high near 31. Calm wind becoming east northeast 5 to 8 km/h in the afternoon.

    High: 31 °C

    Areas Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °C

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 33. Light south southeast wind becoming south southwest 6 to 11 km/h in the morning.

    High: 33 °C

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23. South wind 3 to 8 km/h.

    Low: 23 °C

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33. Southwest wind 8 to 13 km/h.

    High: 33 °C

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 23. South southwest wind 8 to 10 km/h.

    Low: 23 °C

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33. West southwest wind 10 to 13 km/h.

    High: 33 °C

    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 33. Calm wind becoming south southwest 5 to 8 km/h in the afternoon. Chance of precipitation is 80%.
Tonight
Showers and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Patchy fog after 11pm. Low around 22. Calm wind. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Areas of fog before 8am. Otherwise, partly sunny, with a high near 31. Calm wind becoming east northeast 5 to 8 km/h in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 22. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 33. Light south southeast wind becoming south southwest 6 to 11 km/h in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23. South wind 3 to 8 km/h.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33. Southwest wind 8 to 13 km/h.
Wednesday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 23. South southwest wind 8 to 10 km/h.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33. West southwest wind 10 to 13 km/h.
Thursday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 22. West wind 5 to 10 km/h becoming north northeast after midnight.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 32. Northeast wind 8 to 11 km/h becoming southwest in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 22. Northeast wind 5 to 8 km/h becoming calm after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 33. South southeast wind 5 to 10 km/h becoming southwest in the afternoon.
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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:
9:03 am CDT Jul 13, 2025
Forecast Valid:
9am CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
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