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.

Partly Cloudy

32°F

0°C

Humidity 50%
Wind Speed Calm
Barometer 30.24 in (1024.5 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 30 Dec 4:52 pm CST
Extended Forecast for

3 Miles SW Vergennes IL

  • This Afternoon

    This Afternoon: Partly sunny, with a steady temperature around 32. Southwest wind around 8 mph.

    High: 32 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southwest wind 5 to 7 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 43. West northwest wind 6 to 9 mph.

    High: 43 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. Light and variable wind.

    Low: 27 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 40. Calm wind becoming east northeast around 5 mph.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 46. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 46 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27. North northeast wind around 6 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41. North northeast wind 3 to 6 mph.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a steady temperature around 32. Southwest wind around 8 mph.
Tonight
Mostly clear, with a low around 27. Southwest wind 5 to 7 mph.
Wednesday
Increasing clouds, with a high near 43. West northwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 27. Light and variable wind.
New Year's Day
Partly sunny, with a high near 40. Calm wind becoming east northeast around 5 mph.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
Mostly cloudy, with a high near 46. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 27. North northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 41. North northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 26. Calm wind.
Sunday
Partly sunny, with a high near 47. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 35. Southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 53. West southwest wind 7 to 9 mph becoming northwest in the afternoon.
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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:
4:16 pm CST Dec 30, 2025
Forecast Valid:
4pm CST Dec 30, 2025-6pm CST Jan 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation