Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
A Few Clouds
35°F
2°C
| Humidity | 64% |
| Wind Speed | NW 14 G 22 mph |
| Barometer | 30.26 in (1025.0 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 26°F (-3°C) |
| Last update | 11 Jan 1:52 am CST |
Extended Forecast for
Grand Tower IL
Overnight
Low: 27 °F
Mostly Clear
Sunday
High: 41 °F
Sunny
Sunday Night
Low: 26 °F
Mostly Clear
Monday
High: 52 °F
Sunny
Monday Night
Low: 34 °F
Mostly Clear
Tuesday
High: 59 °F
Mostly Sunny
Tuesday Night
Low: 40 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday
High: 47 °F
Partly Sunny
then Slight
Chance
ShowersWednesday Night
Low: 19 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 27. Northwest wind 11 to 14 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 41. Northwest wind 9 to 14 mph becoming light north northwest in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 26. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 52. Southwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 34. South southwest wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 59. Southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 40. Southwest wind 6 to 10 mph becoming west northwest after midnight.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 47. North northwest wind 6 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 19. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 38. North northwest wind 5 to 7 mph becoming south southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 27. South southwest wind 6 to 8 mph.
Friday
Partly sunny, with a high near 44. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 24. West wind around 7 mph.
Saturday
Partly sunny, with a high near 37. West wind 7 to 11 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grand Tower IL
37.62°N 89.49°W
37.62°N 89.49°W
1:41 am CST Jan 11, 2026
2am CST Jan 11, 2026-6pm CST Jan 17, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
