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

73°F

23°C

Humidity 41%
Wind Speed Vrbl 5 mph
Barometer 30.09 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 6 Oct 12:51 pm CDT
Extended Forecast for

3 Miles NNE Jacob IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. Light south southeast wind.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 53. Calm wind.

    Low: 53 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58. South southwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Light northeast wind.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. Light east southeast wind.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 1pm. Sunny, with a high near 83. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 83 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 79. Light south southeast wind.
Tonight
Clear, with a low around 53. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 58. South southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 54. Light northeast wind.
Friday
Sunny, with a high near 81. Calm wind becoming east southeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 55. Light east southeast wind.
Saturday
A slight chance of showers after 1pm. Sunny, with a high near 83. Calm wind becoming south southeast 5 to 8 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 59. Light east wind.
Sunday
A slight chance of showers. Mostly sunny, with a high near 78. Light and variable wind becoming north 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 59. Light and variable wind.
Columbus Day
Mostly sunny, with a high near 84. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Jacob IL
 37.78°N 89.51°W
Last Update:
5:21 am CDT Oct 6, 2026
Forecast Valid:
1pm CDT Oct 6, 2026-6pm CDT Oct 12, 2026
 
Forecast Discussion
 
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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