Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Mostly Cloudy
79°F
26°C
| Humidity | 74% |
| Wind Speed | NW 9 mph |
| Barometer | 29.83 in |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 2 Aug 5:52 pm CDT |
Extended Forecast for
4 Miles SW Vergennes IL
Tonight
Low: 63 °F
Partly Cloudy
then Patchy
FogMonday
High: 85 °F
Patchy Fog
then SunnyMonday Night
Low: 63 °F
Mostly Clear
Tuesday
High: 88 °F
Becoming
SunnyTuesday Night
Low: 64 °F
Mostly Clear
Wednesday
High: 89 °F
Sunny
Wednesday Night
Low: 68 °F
Mostly Clear
Thursday
High: 89 °F
Slight Chance
T-stormsThursday Night
Low: 70 °F
Chance
T-storms
Detailed Forecast
Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 63. North northwest wind 3 to 6 mph.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 63. Calm wind.
Tuesday
Partly sunny through mid morning, then becoming sunny, with a high near 88. Calm wind.
Tuesday Night
Mostly clear, with a low around 64. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Light south wind.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light south wind.
Sunday
Mostly sunny, with a high near 92. South southwest wind 3 to 7 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SW Vergennes IL
37.86°N 89.39°W
37.86°N 89.39°W
6:06 pm CDT Aug 2, 2026
6pm CDT Aug 2, 2026-6pm CDT Aug 9, 2026
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