Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

5 Miles S Pinckneyville IL

Extreme Heat Warning August 16, 03:07am until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 16, 03:07am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 77 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 96. Heat index values as high as 113. Light and variable wind becoming west southwest around 6 mph in the morning.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Light north northwest wind.  Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    Monday: A 10 percent chance of showers before 7am.  Mostly sunny, with a high near 88. North northwest wind 3 to 7 mph.

    High: 88 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Light north wind.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 91. Calm wind becoming west 5 to 7 mph in the morning.

    High: 91 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 77. Southwest wind 3 to 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 113. Light and variable wind becoming west southwest around 6 mph in the morning.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light north northwest wind. Chance of precipitation is 40%.
Monday
A 10 percent chance of showers before 7am. Mostly sunny, with a high near 88. North northwest wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 66. Light north wind.
Tuesday
Sunny, with a high near 90. Calm wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. Light south wind.
Wednesday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 91. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84. North northeast wind 3 to 6 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Pinckneyville IL
 37.99°N 89.38°W
2:56 am CDT Aug 16, 2026
3am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
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Additional Resources

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