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

3 Miles SW Vergennes IL

  • Overnight

    Overnight: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 70. Light south southwest wind becoming southwest 6 to 11 mph in the morning.

    High: 70 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 42. South wind 6 to 9 mph becoming west after midnight.

    Low: 42 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 68. North northwest wind 6 to 8 mph becoming south southeast in the afternoon.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. South wind 8 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 48. East northeast wind 10 to 13 mph, with gusts as high as 18 mph.

    High: 48 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain showers likely before 3am, then rain likely, possibly mixed with snow showers.  Cloudy, with a low around 35. East northeast wind around 10 mph.  Chance of precipitation is 70%.

    Low: 35 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of showers, mainly before noon.  Mostly cloudy, with a high near 45. East northeast wind 8 to 10 mph.

    High: 45 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers.  Mostly cloudy, with a low around 38. East wind around 8 mph.

    Low: 38 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 36. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 70. Light south southwest wind becoming southwest 6 to 11 mph in the morning.
Friday Night
Clear, with a low around 42. South wind 6 to 9 mph becoming west after midnight.
Saturday
Sunny, with a high near 68. North northwest wind 6 to 8 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 34. South wind 8 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly cloudy, with a high near 48. East northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 45. East northeast wind 8 to 10 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 38. East wind around 8 mph.
Tuesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 57. South southeast wind around 9 mph becoming southwest in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. West southwest wind around 8 mph becoming east southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. South wind 8 to 10 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. South wind 9 to 14 mph, with gusts as high as 21 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Vergennes IL
 37.86°N 89.39°W
12:17 am CST Feb 27, 2026
3am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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Additional Resources

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