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

43°F

6°C

Humidity 43%
Wind Speed Vrbl 7 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 20 Feb 11:52 am CST
Extended Forecast for

3 Miles SW Vergennes IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 48. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. North northwest wind 3 to 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 43. Northwest wind 6 to 9 mph.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 38. Breezy, with a northwest wind 13 to 21 mph, with gusts as high as 30 mph.

    High: 38 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 17. North northwest wind around 15 mph, with gusts as high as 22 mph.

    Low: 17 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 34. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. North northwest wind around 5 mph becoming calm.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 48. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 30. North northwest wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 43. Northwest wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 38. Breezy, with a northwest wind 13 to 21 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 17. North northwest wind around 15 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 34. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 17. North northwest wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 46. South wind 6 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 57. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 35. Southwest wind 7 to 9 mph becoming north northwest after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 55. North northwest wind 7 to 9 mph becoming east northeast 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:
11:42 am CST Feb 20, 2026
Forecast Valid:
12pm CST Feb 20, 2026-6pm CST Feb 26, 2026
 
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