Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Overcast and Breezy
57°F
14°C
| Humidity | 78% |
| Wind Speed | S 24 G 43 mph |
| Barometer | 29.69 in (1005.4 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Last update | 18 Feb 12:52 am CST |
Extended Forecast for
3 Miles SW Vergennes IL
Overnight

Low: 57 °F
Mostly Cloudy
and BreezyWednesday
High: 73 °F
Partly Sunny
and Breezy
then Mostly
SunnyWednesday Night

Low: 53 °F
Partly Cloudy
Thursday
High: 70 °F
Chance
T-storms then
Showers
LikelyThursday Night

Low: 40 °F
Mostly Clear
Friday

High: 53 °F
Sunny
Friday Night

Low: 34 °F
Partly Cloudy
Saturday
High: 46 °F
Slight Chance
Rain/Snow
then Chance
ShowersSaturday Night
Low: 26 °F
Chance Snow
Showers then
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a steady temperature around 57. Breezy, with a south southwest wind 14 to 22 mph, with gusts as high as 44 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Breezy, with a southwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 9 mph.
Thursday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South southwest wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 40. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.
Friday
Sunny, with a high near 53. West wind 5 to 14 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 34. North wind 3 to 6 mph.
Saturday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 46. North wind 6 to 10 mph.
Saturday Night
A chance of snow showers before midnight. Partly cloudy, with a low around 26. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 39. Northwest wind 13 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 20. North northwest wind 9 to 11 mph.
Monday
Sunny, with a high near 38. North northwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 20. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 45. Light south southeast wind becoming south 6 to 11 mph in the morning.
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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
1:21 am CST Feb 18, 2026
1am CST Feb 18, 2026-6pm CST Feb 24, 2026



