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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Vergennes IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. North wind around 15 mph, with gusts as high as 23 mph.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 64. North wind 5 to 10 mph becoming light after midnight.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. North northeast wind 3 to 6 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. Light east northeast wind.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Calm wind.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. Light south southeast wind.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. North wind around 15 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 64. North wind 5 to 10 mph becoming light after midnight.
Monday
Sunny, with a high near 85. North northeast wind 3 to 6 mph.
Monday Night
Clear, with a low around 64. Light east northeast wind.
Tuesday
Sunny, with a high near 88. Calm wind.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 91. Calm wind.
Wednesday Night
Mostly clear, with a low around 69. Light south southeast wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Calm wind becoming south southwest 5 to 7 mph in the morning.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 70. South wind 3 to 6 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 3 to 6 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south southwest 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vergennes IL
 37.9°N 89.33°W
Last Update:
3:46 am CDT Aug 2, 2026
Forecast Valid:
4am CDT Aug 2, 2026-6pm CDT Aug 8, 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