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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

67°F

19°C

Humidity 87%
Wind Speed S 13 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 10 Mar 1:52 am CDT
Extended Forecast for

3 Miles SW Vergennes IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 78 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 9pm. Cloudy, with a low around 65. South southwest wind 16 to 18 mph, with gusts as high as 29 mph.

    Low: 65 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 71. Breezy, with a south southwest wind 16 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35. Breezy, with a north northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 29 mph.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 55. North northwest wind around 6 mph becoming west southwest in the afternoon.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 65. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. North northwest wind around 7 mph becoming east after midnight.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 78. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 9pm. Cloudy, with a low around 65. South southwest wind 16 to 18 mph, with gusts as high as 29 mph.
Wednesday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 71. Breezy, with a south southwest wind 16 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 35. Breezy, with a north northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 55. North northwest wind around 6 mph becoming west southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph.
Friday
Partly sunny, with a high near 65. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 41. North northwest wind around 7 mph becoming east after midnight.
Saturday
Sunny, with a high near 69. East southeast wind 8 to 15 mph becoming south in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 55. South wind 13 to 17 mph, with gusts as high as 26 mph.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 66. Breezy, with a south southwest wind 18 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 18 to 22 mph, with gusts as high as 30 mph.
Monday
A slight chance of snow showers. Mostly sunny, with a high near 39. Northwest wind 14 to 16 mph, with gusts as high as 23 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Vergennes IL
 37.86°N 89.39°W
Last Update:
1:51 am CDT Mar 10, 2026
Forecast Valid:
2am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation