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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Partly Cloudy

74°F

23°C

Humidity 50%
Wind Speed W 14 G 20 mph
Barometer 29.87 in (1011.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 27 Mar 12:52 am CDT
Extended Forecast for

3 Miles SW Vergennes IL

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 44. West wind 11 to 18 mph becoming north. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    High: 53 °F

    Showers
    Likely then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. North wind 7 to 15 mph, with gusts as high as 23 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. North wind around 6 mph becoming southeast in the afternoon.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. South southeast wind around 6 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 68. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South wind 14 to 16 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 44. West wind 11 to 18 mph becoming north. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Friday Night
Mostly clear, with a low around 30. North wind 7 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 56. North wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 39. South southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 68. South wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind 10 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 80. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 64. South wind 14 to 16 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 28 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southwest wind around 16 mph, with gusts as high as 25 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. South southwest wind 16 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. South wind around 16 mph, with gusts as high as 23 mph.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 70. South southwest wind around 15 mph, with gusts as high as 24 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Vergennes IL
 37.86°N 89.39°W
Last Update:
1:26 am CDT Mar 27, 2026
Forecast Valid:
1am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation