National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

38°F

3°C

Humidity 55%
Wind Speed Calm
Barometer 30.20 in (1023.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 2 Feb 11:52 am CST
Extended Forecast for

3 Miles SW Vergennes IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 38. South southeast wind around 5 mph.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South southeast wind around 5 mph becoming light and variable.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of drizzle or freezing rain before noon, then a chance of drizzle between noon and 5pm. Mostly cloudy, with a high near 36. Light and variable wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 40%.

    High: 36 °F

    Chance
    Drizzle/Freezing
    Rain then
    Chance
    Drizzle

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. North wind 6 to 8 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. North wind 5 to 7 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 14. Light and variable wind.

    Low: 14 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. South wind around 10 mph becoming west southwest after midnight.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 46. West wind 8 to 10 mph becoming north northwest in the afternoon.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 38. South southeast wind around 5 mph.
Tonight
Mostly cloudy, with a low around 27. South southeast wind around 5 mph becoming light and variable.
Tuesday
A chance of drizzle or freezing rain before noon, then a chance of drizzle between noon and 5pm. Mostly cloudy, with a high near 36. Light and variable wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 20. North wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 31. North wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 14. Light and variable wind.
Thursday
Mostly sunny, with a high near 36. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 29. South wind around 10 mph becoming west southwest after midnight.
Friday
Mostly sunny, with a high near 46. West wind 8 to 10 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 21. North northwest wind around 7 mph.
Saturday
Sunny, with a high near 38. North northeast wind around 7 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 24. East southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 42. South southeast wind 5 to 7 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:
10:57 am CST Feb 2, 2026
Forecast Valid:
12pm CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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