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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

58°F

14°C

Humidity 60%
Wind Speed S 12 mph
Barometer 29.71 in (1005.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 15 Mar 2:52 am CDT
Extended Forecast for

3 Miles SW Vergennes IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 60. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 60 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 68. Breezy, with a south wind 22 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%.

    High: 68 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 9pm. Low around 25. Blustery, with a west northwest wind 26 to 29 mph, with gusts as high as 44 mph. Chance of precipitation is 80%.

    Low: 25 °F

    Blustery.
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33. Breezy, with a west northwest wind 21 to 25 mph, with gusts as high as 36 mph.

    High: 33 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 16. West northwest wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: 16 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39. Northwest wind around 7 mph becoming west southwest in the afternoon.

    High: 39 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 30. South southeast wind 6 to 16 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. South wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 60. South wind 9 to 13 mph, with gusts as high as 21 mph.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 68. Breezy, with a south wind 22 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 9pm. Low around 25. Blustery, with a west northwest wind 26 to 29 mph, with gusts as high as 44 mph. Chance of precipitation is 80%.
Monday
Mostly cloudy, with a high near 33. Breezy, with a west northwest wind 21 to 25 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 16. West northwest wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 39. Northwest wind around 7 mph becoming west southwest in the afternoon.
Tuesday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 30. South southeast wind 6 to 16 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 60. South wind 13 to 17 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 70. South southwest wind 6 to 8 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. North northwest wind around 6 mph becoming south after midnight.
Friday
Mostly sunny, with a high near 74. Southwest wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 49. South southwest wind 7 to 9 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 69. North northwest wind around 10 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:
3:16 am CDT Mar 15, 2026
Forecast Valid:
3am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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