National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

87°F

31°C

Humidity 42%
Wind Speed Calm
Barometer 30.16 in (1020.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 11 Sep 11:52 am CDT
Extended Forecast for

2 Miles S Jacob IL

  • This Afternoon

    This Afternoon: A slight chance of sprinkles after 1pm. Sunny, with a high near 93. Light north wind.

    High: 93 °F

    Slight Chance
    Sprinkles

  • Tonight

    Tonight: Mostly clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Light south southeast wind.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. Light east southeast wind.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Calm wind becoming south southwest around 6 mph in the morning.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Light south wind.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 98. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66. Light and variable wind.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
A slight chance of sprinkles after 1pm. Sunny, with a high near 93. Light north wind.
Tonight
Mostly clear, with a low around 64. Light and variable wind.
Friday
Sunny, with a high near 95. Light south southeast wind.
Friday Night
Mostly clear, with a low around 65. Light east southeast wind.
Saturday
Sunny, with a high near 96. Calm wind becoming south southwest around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 66. Light south wind.
Sunday
Mostly sunny and hot, with a high near 98. Calm wind becoming south southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 66. Light and variable wind.
Monday
Mostly sunny and hot, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. Light east wind.
Tuesday
Sunny and hot, with a high near 97. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 66. Light east wind.
Wednesday
Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Jacob IL
 37.73°N 89.54°W
Last Update:
10:01 am CDT Sep 11, 2025
Forecast Valid:
12pm CDT Sep 11, 2025-6pm CDT Sep 17, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation