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Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
28°F
-2°C
| Humidity | 92% |
| Wind Speed | Calm |
| Barometer | 30.37 in (1028.6 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Last update | 15 Nov 12:52 am CST |
Extended Forecast for
Alto Pass IL
Overnight
Low: 29 °F
Clear
Sunday
High: 54 °F
Sunny
Sunday Night
Low: 30 °F
Mostly Clear
Monday
High: 57 °F
Sunny
Monday Night
Low: 31 °F
Clear
Tuesday
High: 59 °F
Sunny
Tuesday Night
Low: 35 °F
Clear
Wednesday
High: 61 °F
Sunny
Wednesday Night
Low: 41 °F
Partly Cloudy
Detailed Forecast
Overnight
Clear, with a low around 29. Calm wind.
Sunday
Sunny, with a high near 54. Light northeast wind.
Sunday Night
Mostly clear, with a low around 30. Calm wind.
Monday
Sunny, with a high near 57. Calm wind.
Monday Night
Clear, with a low around 31. Calm wind.
Tuesday
Sunny, with a high near 59. Light south southeast wind.
Tuesday Night
Clear, with a low around 35. Light southeast wind.
Wednesday
Sunny, with a high near 61. South wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 41. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 65. South southwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 46. Calm wind.
Friday
Mostly sunny, with a high near 68. Calm wind becoming south around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 46. South wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 69. South wind 6 to 11 mph, with gusts as high as 20 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Alto Pass IL
37.57°N 89.32°W
37.57°N 89.32°W
12:26 am CST Nov 15, 2026
1am CST Nov 15, 2026-6pm CST Nov 21, 2026
Additional Resources
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