Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
50°F
10°C
| Humidity | 47% |
| Wind Speed | Calm |
| Barometer | 29.80 in |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Last update | 25 Feb 10:52 am CST |
Extended Forecast for
3 Miles SW Vergennes IL
Today
High: 54 °F
Mostly Cloudy
Tonight
Low: 37 °F
Chance
ShowersThursday
High: 56 °F
Mostly Sunny
Thursday Night
Low: 35 °F
Mostly Clear
Friday
High: 66 °F
Sunny
Friday Night
Low: 43 °F
Clear
Saturday
High: 67 °F
Sunny
Saturday Night
Low: 35 °F
Slight Chance
Showers then
Mostly CloudySunday
High: 49 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Today
Mostly cloudy, with a high near 54. Calm wind becoming east northeast around 5 mph in the afternoon.
Tonight
A 50 percent chance of showers, mainly between 10pm and 5am. Mostly cloudy, with a low around 37. East northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 56. East northeast wind 5 to 7 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 35. Light and variable wind.
Friday
Sunny, with a high near 66. Light south southwest wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Clear, with a low around 43. South wind 6 to 9 mph becoming west after midnight.
Saturday
Sunny, with a high near 67. West wind 6 to 10 mph becoming east in the morning.
Saturday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 35. South southeast wind 9 to 14 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.
Sunday
A chance of showers after noon. Cloudy, with a high near 49. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Rain showers likely before midnight, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 32. Northeast wind around 11 mph, with gusts as high as 18 mph.
Monday
A chance of rain and snow showers. Cloudy, with a high near 44. Northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers. Cloudy, with a low around 33. East northeast wind 7 to 9 mph.
Tuesday
A chance of showers. Cloudy, with a high near 50. East wind around 8 mph becoming west in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SW Vergennes IL
37.86°N 89.39°W
37.86°N 89.39°W
9:46 am CST Feb 25, 2026
11am CST Feb 25, 2026-6pm CST Mar 3, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
