Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
29°F
-2°C
| Humidity | 39% |
| Wind Speed | S 8 mph |
| Barometer | 29.97 in (1015.5 mb) |
| Dewpoint | 7°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | 21°F (-6°C) |
| Last update | 15 Jan 4:52 pm CST |
Extended Forecast for
3 Miles SW Vergennes IL
Tonight
Low: 28 °F⇑
Chance Snow
ShowersFriday
High: 46 °F
Mostly Cloudy
Friday Night
Low: 24 °F
Mostly Cloudy
Saturday
High: 30 °F
Mostly Sunny
Saturday Night
Low: 12 °F
Mostly Clear
Sunday
High: 29 °F
Sunny
Sunday Night
Low: 17 °F
Mostly Clear
M.L.King Day
High: 25 °F
Mostly Sunny
Monday Night
Low: 10 °F
Mostly Clear
Detailed Forecast
Tonight
A chance of snow showers between 11pm and 1am. Increasing clouds, with a temperature rising to around 33 by 3am. South wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 46. West wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 24. West northwest wind 8 to 11 mph.
Saturday
Mostly sunny, with a high near 30. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 12. West northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 29. West wind 6 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 17. South southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
M.L.King Day
Mostly sunny, with a high near 25. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 10. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 33. Light southwest wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 23. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 45. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A slight chance of rain or freezing rain. Partly cloudy, with a low around 23. West wind around 8 mph becoming north northeast after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 41. North northeast wind 7 to 9 mph becoming south 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
3:16 pm CST Jan 15, 2026
5pm CST Jan 15, 2026-6pm CST Jan 22, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
