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
Grand Tower IL
Overnight
Low: 63 °F
Partly Cloudy
Tuesday
High: 87 °F
Mostly Sunny
Tuesday Night
Low: 67 °F
Partly Cloudy
Wednesday
High: 89 °F
Partly Sunny
Wednesday Night
Low: 68 °F
Slight Chance
T-stormsThursday
High: 88 °F
Sunny
Thursday Night
Low: 65 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 65 °F
Clear
Detailed Forecast
Overnight
Partly cloudy, with a low around 63. Calm wind.
Tuesday
Mostly sunny, with a high near 87. Calm wind.
Tuesday Night
Partly cloudy, with a low around 67. Calm wind.
Wednesday
Partly sunny, with a high near 89. Calm wind.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. Calm wind. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 88. Calm wind becoming north 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 65. Light north wind.
Friday
Sunny, with a high near 87. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Clear, with a low around 65. Light east wind.
Saturday
Sunny, with a high near 89. Calm wind.
Saturday Night
Mostly clear, with a low around 68. Calm wind.
Sunday
Sunny, with a high near 93. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 72. South wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 94. South southwest wind 5 to 8 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grand Tower IL
37.64°N 89.52°W
37.64°N 89.52°W
9:51 pm CDT Aug 24, 2026
1am CDT Aug 25, 2026-6pm CDT Aug 31, 2026
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