Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
52°F
11°C
| Humidity | 97% |
| Wind Speed | Calm |
| Barometer | 30.01 in (1016.0 mb) |
| Dewpoint | 51°F (11°C) |
| Visibility | 10.00 mi |
| Last update | 11 Oct 6:52 am CDT |
Extended Forecast for
Grand Tower IL
Today
High: 86 °F
Sunny
Tonight
Low: 60 °F
Mostly Clear
Columbus Day
High: 91 °F
Sunny
Monday Night
Low: 65 °F
Clear
Tuesday
High: 93 °F
Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
then Slight
Chance
T-stormsWednesday
High: 86 °F
Showers
LikelyWednesday Night
Low: 64 °F
Chance
ShowersThursday
High: 82 °F
Chance
Showers
Detailed Forecast
Today
Sunny, with a high near 86. Light west northwest wind.
Tonight
Mostly clear, with a low around 60. Light south wind.
Columbus Day
Sunny, with a high near 91. Light south southwest wind becoming southwest 6 to 11 mph in the morning.
Monday Night
Clear, with a low around 65. South southwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 93. Southwest wind 5 to 9 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. South southwest wind 3 to 5 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. West wind 3 to 6 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Calm wind becoming east northeast around 5 mph after midnight.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. East wind 6 to 9 mph becoming south southwest in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South southwest wind 5 to 7 mph becoming west northwest after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 70. North northwest wind 10 to 16 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 43. North northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 62. North wind 9 to 13 mph, with gusts as high as 18 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
4:56 am CDT Oct 11, 2026
7am CDT Oct 11, 2026-6pm CDT Oct 17, 2026
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