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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

66°F

19°C

Humidity 30%
Wind Speed Vrbl 3 mph
Barometer 30.01 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 28 Feb 12:47 pm CST
Extended Forecast for

3 Miles SW Vergennes IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 67. South southwest wind around 7 mph.

    High: 67 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind 6 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 49. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 49 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of rain showers before midnight, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. Northeast wind around 10 mph. Chance of precipitation is 70%.

    Low: 35 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: Showers likely, mainly before noon. Cloudy, with a high near 47. East wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 47 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 43. East wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers. Mostly cloudy, with a high near 69. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.

    High: 69 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 57. South wind around 10 mph.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 67. South southwest wind around 7 mph.
Tonight
A 20 percent chance of showers before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind 6 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Increasing clouds, with a high near 49. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Sunday Night
A chance of rain showers before midnight, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. Northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 47. East wind 7 to 10 mph. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 43. East wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 69. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 57. South wind around 10 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. South southwest wind around 10 mph.
Thursday
Showers likely. Partly sunny, with a high near 71. South wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind around 10 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 22 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:
12:26 pm CST Feb 28, 2026
Forecast Valid:
1pm CST Feb 28, 2026-6pm CST Mar 6, 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