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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast and Breezy

57°F

14°C

Humidity 78%
Wind Speed S 24 G 43 mph
Barometer 29.69 in (1005.4 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Feb 12:52 am CST
Extended Forecast for

3 Miles SW Vergennes IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 57. Breezy, with a south southwest wind 14 to 22 mph, with gusts as high as 44 mph.

    Low: 57 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 73. Breezy, with a southwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 73 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind around 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South southwest wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. West wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34. North wind 3 to 6 mph.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 46. North wind 6 to 10 mph.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of snow showers before midnight. Partly cloudy, with a low around 26. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Chance Snow
    Showers then
    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 57. Breezy, with a south southwest wind 14 to 22 mph, with gusts as high as 44 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Breezy, with a southwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 9 mph.
Thursday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South southwest wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 40. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.
Friday
Sunny, with a high near 53. West wind 5 to 14 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 34. North wind 3 to 6 mph.
Saturday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 46. North wind 6 to 10 mph.
Saturday Night
A chance of snow showers before midnight. Partly cloudy, with a low around 26. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 39. Northwest wind 13 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind 9 to 11 mph.
Monday
Sunny, with a high near 38. North northwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 20. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 45. Light south southeast wind becoming south 6 to 11 mph in the morning.
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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:
1:21 am CST Feb 18, 2026
Forecast Valid:
1am CST Feb 18, 2026-6pm CST Feb 24, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation