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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

38°F

3°C

Humidity 62%
Wind Speed S 5 mph
Barometer 30.17 in (1022.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 2 Feb 5:52 pm CST
Extended Forecast for

Alto Pass IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Southeast wind 3 to 5 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of drizzle or freezing rain before 11am, then a chance of drizzle between 11am and 5pm. Mostly cloudy, with a high near 36. Light and variable wind becoming north 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 36 °F

    Chance
    Drizzle/Freezing
    Rain then
    Chance
    Drizzle

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. North wind 6 to 9 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. North wind 6 to 8 mph.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. North wind around 5 mph becoming calm in the evening.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Calm wind becoming south 5 to 8 mph in the morning.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. South southwest wind around 8 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 46. West southwest wind 7 to 9 mph becoming north northwest in the afternoon.

    High: 46 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. North northwest wind around 6 mph.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Southeast wind 3 to 5 mph.
Tuesday
A chance of drizzle or freezing rain before 11am, then a chance of drizzle between 11am and 5pm. Mostly cloudy, with a high near 36. Light and variable wind becoming north 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 21. North wind 6 to 9 mph.
Wednesday
Partly sunny, with a high near 30. North wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 15. North wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 36. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
Mostly clear, with a low around 28. South southwest wind around 8 mph.
Friday
Sunny, with a high near 46. West southwest wind 7 to 9 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 24. North northwest wind around 6 mph.
Saturday
Sunny, with a high near 37. North wind around 6 mph becoming east southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 25. South southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 41. South wind 5 to 7 mph becoming north in the afternoon.
Sunday Night
Partly cloudy, with a low around 27. Light and variable wind.
Monday
Mostly sunny, with a high near 46. South wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alto Pass IL
 37.57°N 89.32°W
Last Update:
4:52 pm CST Feb 2, 2026
Forecast Valid:
6pm CST Feb 2, 2026-6pm CST Feb 9, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation