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

30°F

-1°C

Humidity 64%
Wind Speed S 12 mph
Barometer 30.21 in (1023.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 30 Dec 6:52 pm CST
Extended Forecast for

3 Miles NE Jacob IL

  • Tonight

    Tonight: Mostly clear, with a low around 26. Southwest wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 43. West northwest wind 5 to 8 mph.

    High: 43 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. Light and variable wind.

    Low: 27 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 41. Light and variable wind.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 46. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 46 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. North northeast wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42. North wind 3 to 6 mph.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Southwest wind around 6 mph.
Wednesday
Increasing clouds, with a high near 43. West northwest wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 27. Light and variable wind.
New Year's Day
Partly sunny, with a high near 41. Light and variable wind.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
Mostly cloudy, with a high near 46. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 26. North northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 42. North wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 26. Calm wind.
Sunday
Partly sunny, with a high near 47. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 35. Southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 53. West southwest wind 6 to 8 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 32. North northwest wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 49. North northwest wind 3 to 6 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:
4:16 pm CST Dec 30, 2025
Forecast Valid:
7pm CST Dec 30, 2025-6pm CST Jan 6, 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