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.

N/A

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

3 Miles NE Jacob IL

  • Today

    Today: Sunny, with a high near 67. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. West wind around 6 mph becoming light and variable in the evening.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 49. South southeast wind around 6 mph.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. South southwest wind 6 to 15 mph, with gusts as high as 22 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53. Southwest wind 6 to 10 mph.

    Low: 53 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind around 7 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. South wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 67. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tonight
Mostly clear, with a low around 41. West wind around 6 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 68. Light and variable wind.
Monday Night
Clear, with a low around 49. South southeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 78. South southwest wind 6 to 15 mph, with gusts as high as 22 mph.
Tuesday Night
Clear, with a low around 53. Southwest wind 6 to 10 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind around 7 mph.
Thursday
Sunny, with a high near 82. South wind 6 to 15 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 20 mph.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 79. South wind 10 to 14 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. West southwest wind 8 to 10 mph becoming northwest after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 71. North northwest wind 8 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Jacob IL
 37.78°N 89.51°W
Last Update:
6:11 am CDT Apr 19, 2026
Forecast Valid:
8am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation