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

57°F

14°C

Humidity 41%
Wind Speed NW 7 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 13 Jan 9:52 pm CST
Extended Forecast for

3 Miles NE Jacob IL

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 1am. Cloudy, with a low around 40. West wind 6 to 8 mph.

    Low: 40 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 33 by 5pm. North northwest wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 42 °F⇓

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 19. North northwest wind 6 to 13 mph, with gusts as high as 25 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind around 6 mph becoming south southwest in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. South wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 46. West wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. West northwest wind around 10 mph.

    Low: 21 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 30. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 30 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 12. Northwest wind 6 to 9 mph.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers, mainly before 1am. Cloudy, with a low around 40. West wind 6 to 8 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 33 by 5pm. North northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 19. North northwest wind 6 to 13 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 34. Northwest wind around 6 mph becoming south southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 25. South wind 6 to 13 mph, with gusts as high as 21 mph.
Friday
Partly sunny, with a high near 46. West wind 10 to 16 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 21. West northwest wind around 10 mph.
Saturday
Partly sunny, with a high near 30. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 12. Northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 32. West southwest wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 18. West southwest wind around 8 mph.
M.L.King Day
Sunny, with a high near 36. West northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 13. North northwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 33. North northwest wind 5 to 9 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Jacob IL
 37.78°N 89.51°W
Last Update:
8:16 pm CST Jan 13, 2026
Forecast Valid:
10pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
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Additional Resources

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