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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog/Mist

60°F

16°C

Humidity 93%
Wind Speed S 10 mph
Barometer 29.61 in (1002.7 mb)
Dewpoint 58°F (14°C)
Visibility 5.00 mi
Last update 19 Feb 7:52 am CST
Extended Forecast for

3 Miles SW Vergennes IL

  • Today

    Today: Showers and thunderstorms likely before 3pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 70. South wind 10 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly clear, with a low around 38. West wind 11 to 15 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52. West wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. North wind 3 to 6 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 48. North wind 6 to 10 mph.

    High: 48 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 40. Northwest wind 13 to 18 mph, with gusts as high as 26 mph.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20. North northwest wind around 13 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 36. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 36 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely before 3pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 70. South wind 10 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Tonight
Mostly clear, with a low around 38. West wind 11 to 15 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 52. West wind 5 to 14 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 33. North wind 3 to 6 mph.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 48. North wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 25. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 40. Northwest wind 13 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind around 13 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 36. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 19. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 47. Light south southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Wednesday
Mostly cloudy, with a high near 58. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Vergennes IL
 37.86°N 89.39°W
Last Update:
7:02 am CST Feb 19, 2026
Forecast Valid:
8am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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