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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

71°F

22°C

Humidity 59%
Wind Speed S 13 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 8:52 am CDT
Extended Forecast for

3 Miles SW Vergennes IL

  • Today

    Today: Mostly sunny, with a high near 81. Breezy, with a south southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 81 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South wind 15 to 18 mph, with gusts as high as 28 mph.

    Low: 65 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South southwest wind 15 to 17 mph, with gusts as high as 26 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. South southwest wind 14 to 18 mph, with gusts as high as 26 mph.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 9 to 11 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 81. Breezy, with a south southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South wind 15 to 18 mph, with gusts as high as 28 mph.
Monday
A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 68. South southwest wind 15 to 17 mph, with gusts as high as 26 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. South southwest wind 14 to 18 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 20 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 9 to 11 mph.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. South southwest wind around 7 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 18 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South southwest wind 11 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:
8:01 am CDT Apr 12, 2026
Forecast Valid:
9am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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