Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

73°F

23°C

Humidity 94%
Wind Speed N 5 mph
Barometer 29.98 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 16 Jun 10:53 am CDT
Extended Forecast for

Alto Pass IL

Flood Watch until June 17, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until June 17, 12:00am

    NOW until 12:00am Tue

    Flood Watch

  • Today

    High: 80 °F

    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am.  Mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph.  Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 85. South southwest wind 5 to 7 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. South wind 6 to 9 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am.  Mostly cloudy, with a low around 70. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 84. Northwest wind around 6 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 80. South wind 3 to 6 mph. Chance of precipitation is 90%.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am. Mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph. Chance of precipitation is 50%.
Tuesday
A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 85. South southwest wind 5 to 7 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 73. South wind 6 to 9 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Juneteenth
Mostly sunny, with a high near 84. Northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Clear, with a low around 73. South wind around 6 mph.
Saturday
Sunny, with a high near 91. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 75. South wind 6 to 8 mph.
Sunday
Sunny, with a high near 91. South wind 6 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Alto Pass IL
 37.57°N 89.32°W
11:16 am CDT Jun 16, 2025
11am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
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Additional Resources

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