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.

Partly Cloudy

83°F

28°C

Humidity 70%
Wind Speed SW 14 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 19 May 2:56 pm CDT
Extended Forecast for

Sesser IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 78. West southwest wind around 11 mph.

    High: 78 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 59. Calm wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 66. North northeast wind around 10 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. Northeast wind 6 to 9 mph.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 73. Northeast wind 8 to 10 mph.

    High: 73 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers, with thunderstorms also possible after 4am. Low around 58. East northeast wind 7 to 10 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. East wind 7 to 9 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 60. West southwest wind 3 to 7 mph.

    Low: 60 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Light west southwest wind.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 78. West southwest wind around 11 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 59. Calm wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 66. North northeast wind around 10 mph. Chance of precipitation is 60%.
Wednesday Night
Mostly cloudy, with a low around 55. Northeast wind 6 to 9 mph.
Thursday
Mostly cloudy, with a high near 73. Northeast wind 8 to 10 mph.
Thursday Night
Showers, with thunderstorms also possible after 4am. Low around 58. East northeast wind 7 to 10 mph. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. High near 75. East wind 7 to 9 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 60. West southwest wind 3 to 7 mph.
Saturday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Light west southwest wind.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Calm wind.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.
Memorial Day
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Calm wind becoming east southeast around 5 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sesser IL
 38.09°N 89.04°W
Last Update:
2:51 pm CDT May 19, 2026
Forecast Valid:
4pm CDT May 19, 2026-6pm CDT May 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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