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.

Overcast

84°F

29°C

Humidity 72%
Wind Speed S 9 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 10 Jul 1:56 pm CDT
Extended Forecast for

Sesser IL

Flood Watch July 10, 02:05pm until July 12, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 10, 02:05pm until July 12, 01:00am

    NOW until 1:00am Sun

    Flood Watch

  • This Afternoon

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 71. Calm wind. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms
    Likely then
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. High near 86. Light and variable wind. Chance of precipitation is 80%.

    High: 86 °F

    Showers
    Likely then
    Heavy Rain

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 2am, then a chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 70%.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Calm wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 68. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. East northeast wind 5 to 9 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. East northeast wind around 6 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 89. Light west southwest wind.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 71. Calm wind. Chance of precipitation is 80%.
Saturday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. High near 86. Light and variable wind. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 2am, then a chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Calm wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 68. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. East northeast wind 5 to 9 mph.
Monday Night
Partly cloudy, with a low around 69. East northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 88. East wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 70. Light and variable wind.
Wednesday
Sunny, with a high near 90. Calm wind.
Wednesday Night
Mostly clear, with a low around 72. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 90. Light west southwest wind.
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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:
1:21 pm CDT Jul 10, 2026
Forecast Valid:
2pm CDT Jul 10, 2026-6pm CDT Jul 16, 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