Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
3 Miles SW Vergennes IL
Overnight

Low: 36 °F
Clear
Friday
High: 70 °F
Patchy Fog
then SunnyFriday Night

Low: 42 °F
Clear
Saturday

High: 68 °F
Sunny
Saturday Night

Low: 34 °F
Partly Cloudy
Sunday

High: 48 °F
Mostly Cloudy
Sunday Night
Low: 35 °F
Showers
Likely then
Rain/Snow
LikelyMonday

High: 45 °F
Chance
ShowersMonday Night

Low: 38 °F
Chance
Showers
Detailed Forecast
Overnight
Clear, with a low around 36. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 70. Light south southwest wind becoming southwest 6 to 11 mph in the morning.
Friday Night
Clear, with a low around 42. South wind 6 to 9 mph becoming west after midnight.
Saturday
Sunny, with a high near 68. North northwest wind 6 to 8 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 34. South wind 8 to 13 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly cloudy, with a high near 48. East northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 45. East northeast wind 8 to 10 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 38. East wind around 8 mph.
Tuesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 57. South southeast wind around 9 mph becoming southwest in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. West southwest wind around 8 mph becoming east southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. South wind 8 to 10 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. South wind 9 to 14 mph, with gusts as high as 21 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
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ABOUT THIS FORECAST
Point Forecast:
3 Miles SW Vergennes IL
37.86°N 89.39°W
37.86°N 89.39°W
12:17 am CST Feb 27, 2026
3am CST Feb 27, 2026-6pm CST Mar 5, 2026



