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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

46°F

8°C

Humidity 71%
Wind Speed N 9 mph
Barometer 30.24 in (1024.0 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 6 Nov 8:52 pm CST
Extended Forecast for

Alto Pass IL

Freeze Watch November 7, 11:00pm until November 8, 08:00am
Freeze Warning November 6, 11:00pm until November 7, 08:00am
Click here for hazard details and duration
Freeze Watch
Freeze Warning

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, clear, with a low around 32. North wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Clear then
    Patchy Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, sunny, with a high near 54. Light north wind.

    High: 54 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 63. Calm wind becoming west southwest around 5 mph.

    High: 63 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 43. Light southwest wind.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming west around 5 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy frost after 1am. Otherwise, clear, with a low around 32. North wind around 5 mph becoming calm in the evening.
Saturday
Areas of frost before 9am. Otherwise, sunny, with a high near 54. Light north wind.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 32. Calm wind.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 63. Calm wind becoming west southwest around 5 mph.
Sunday Night
Clear, with a low around 39. Light and variable wind.
Monday
Sunny, with a high near 66. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 43. Light southwest wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 44. Calm wind.
Veterans Day
Mostly sunny, with a high near 65. Calm wind becoming north northwest around 5 mph.
Wednesday Night
Partly cloudy, with a low around 41. Calm wind.
Thursday
Mostly sunny, with a high near 58. Calm wind becoming north northwest 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 36. Light north wind.
Friday
Sunny, with a high near 57. North northwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alto Pass IL
 37.57°N 89.32°W
Last Update:
5:31 pm CST Nov 6, 2026
Forecast Valid:
9pm CST Nov 6, 2026-6pm CST Nov 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation