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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

98°F

37°C

Humidity 42%
Wind Speed SW 9 mph
Barometer 30.09 in (1018.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 16 Aug 2:56 pm CDT
Extended Forecast for

2 Miles W Sesser IL

Heat Advisory August 16, 03:40pm until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 03:40pm until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 97 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Light south southeast wind.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 105. Light and variable wind becoming east around 5 mph.

    High: 97 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 75. Light and variable wind.

    Low: 75 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. Light east wind.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Light and variable wind.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 98 °F

    Hot

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. East northeast wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 97. Light south southeast wind.
Tonight
Partly cloudy, with a low around 74. Light south southeast wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 105. Light and variable wind becoming east around 5 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 75. Light and variable wind.
Monday
Sunny and hot, with a high near 98. Light east wind.
Monday Night
Mostly clear, with a low around 76. Light and variable wind.
Tuesday
Sunny and hot, with a high near 98. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. East northeast wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 89. Light north wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 68. North northeast wind 5 to 9 mph.
Thursday
Mostly sunny, with a high near 87. Northeast wind 6 to 10 mph.
Thursday Night
Partly cloudy, with a low around 66. Northeast wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 89. Calm wind becoming northeast around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Sesser IL
 38.1°N 89.1°W
Last Update:
3:31 pm CDT Aug 16, 2025
Forecast Valid:
3pm CDT Aug 16, 2025-6pm CDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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