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

51°F

11°C

Humidity 74%
Wind Speed SE 3 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 10 Nov 9:52 pm CST
Extended Forecast for

Jacob IL

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Partly sunny, then gradually becoming sunny, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 22 mph.

    High: 73 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 54. North northwest wind 8 to 16 mph, with gusts as high as 22 mph.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. North northwest wind 5 to 10 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48. North northwest wind 5 to 13 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. Light north wind.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. Calm wind.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 45. Calm wind.
Veterans Day
Partly sunny, then gradually becoming sunny, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 42. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 54. North northwest wind 8 to 16 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 31. North northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 48. North northwest wind 5 to 13 mph.
Friday Night
Mostly clear, with a low around 26. Light north wind.
Saturday
Sunny, with a high near 50. Calm wind.
Saturday Night
Mostly clear, with a low around 29. Calm wind.
Sunday
Mostly sunny, with a high near 55. Calm wind becoming southeast around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 34. Light east wind.
Monday
Mostly sunny, with a high near 56. Calm wind becoming east northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 33. Light east northeast wind.
Tuesday
Sunny, with a high near 59. Calm wind becoming east around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacob IL
 37.73°N 89.54°W
Last Update:
5:46 pm CST Nov 10, 2026
Forecast Valid:
10pm CST Nov 10, 2026-6pm CST Nov 17, 2026
 
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Additional Resources

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