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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

63°F

17°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 7 Mar 1:52 pm CST
Extended Forecast for

4 Miles NNW Vergennes IL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms before 3pm, then a chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 69. West southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West northwest wind 6 to 11 mph becoming light northwest after midnight.

    Low: 38 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 65. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South wind around 7 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75. South southwest wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 61. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 79. South southwest wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 59. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 28 mph.

    Low: 59 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Cloudy, with a high near 71. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 71 °F

    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms before 3pm, then a chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 69. West southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West northwest wind 6 to 11 mph becoming light northwest after midnight.
Sunday
Sunny, with a high near 65. Calm wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
Clear, with a low around 45. South wind around 7 mph.
Monday
Sunny, with a high near 75. South southwest wind 7 to 16 mph, with gusts as high as 23 mph.
Monday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 61. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 79. South southwest wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 59. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 28 mph.
Wednesday
Showers and possibly a thunderstorm. Cloudy, with a high near 71. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Wednesday Night
A chance of showers before midnight. Partly cloudy, with a low around 33. Northwest wind 15 to 18 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 55. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 41. South wind 6 to 14 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 67. Southwest wind 14 to 18 mph, with gusts as high as 25 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Vergennes IL
 37.95°N 89.39°W
Last Update:
2:07 pm CST Mar 7, 2026
Forecast Valid:
2pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation