Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
48°F
9°C
| Humidity | 96% |
| Wind Speed | E 3 mph |
| Barometer | 30.33 in (1026.9 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 20 Oct 12:52 am CDT |
Extended Forecast for
Grand Tower IL
Overnight
Low: 50 °F
Mostly Cloudy
Tuesday
High: 72 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 73 °F
Sunny
Wednesday Night
Low: 46 °F
Clear
Thursday
High: 74 °F
Sunny
Thursday Night
Low: 48 °F
Clear
Friday
High: 73 °F
Sunny
Friday Night
Low: 48 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a steady temperature around 50. Calm wind.
Tuesday
Sunny, with a high near 72. Calm wind.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Wednesday
Sunny, with a high near 73. Calm wind.
Wednesday Night
Clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 74. Calm wind.
Thursday Night
Clear, with a low around 48. Calm wind.
Friday
Sunny, with a high near 73. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 48. Calm wind.
Saturday
Mostly sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 51. Calm wind.
Sunday
Mostly sunny, with a high near 75. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 51. Calm wind.
Monday
Mostly sunny, with a high near 73. Light south wind.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grand Tower IL
37.62°N 89.52°W
37.62°N 89.52°W
12:01 am CDT Oct 20, 2026
1am CDT Oct 20, 2026-6pm CDT Oct 26, 2026
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