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.

Overcast

75°F

24°C

Humidity 61%
Wind Speed Vrbl 6 mph
Barometer 30.20 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 24 Sep 3:52 pm CDT
Extended Forecast for

2 Miles S Jacob IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 71. Light north wind.

    High: 71 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Light north northeast wind.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 75. Light northeast wind.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77. Light and variable wind.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 71. Light north wind.
Tonight
Mostly cloudy, with a low around 59. Light north northeast wind.
Friday
Mostly sunny, with a high near 80. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 75. Light northeast wind.
Saturday Night
Mostly cloudy, with a low around 58. Calm wind.
Sunday
Partly sunny, with a high near 77. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 56. Calm wind.
Monday
Sunny, with a high near 80. Light and variable wind.
Monday Night
Mostly clear, with a low around 59. Calm wind.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83. Light southeast wind becoming south 5 to 10 mph in the morning.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66. South wind 6 to 10 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 13 to 15 mph, with gusts as high as 21 mph.
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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:
4:06 pm CDT Sep 24, 2026
Forecast Valid:
4pm CDT Sep 24, 2026-6pm CDT Sep 30, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation