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.

Fog/Mist

25°F

-4°C

Humidity 92%
Wind Speed S 8 mph
Barometer 29.86 in (1011.5 mb)
Dewpoint 23°F (-5°C)
Visibility 5.00 mi
Wind Chill16°F (-9°C)
Last update 6 Feb 2:52 am CST
Extended Forecast for

3 Miles NE Jacob IL

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 30. South wind around 6 mph becoming west southwest.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 47. West southwest wind 7 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. North northwest wind 6 to 10 mph.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. South southeast wind 3 to 6 mph.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. South southwest wind 6 to 9 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. South wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South southwest wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 30. South wind around 6 mph becoming west southwest.
Friday
Mostly sunny, with a high near 47. West southwest wind 7 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Partly cloudy, with a low around 23. North northwest wind 6 to 10 mph.
Saturday
Sunny, with a high near 35. North northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 24. South southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 50. South southwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 31. South wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 41. South southwest wind around 6 mph.
Tuesday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 65. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 40. Southwest wind around 7 mph becoming northwest after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 53. North northwest wind 7 to 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 32. North wind around 6 mph.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 46. North wind 5 to 7 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:
3:21 am CST Feb 6, 2026
Forecast Valid:
3am CST Feb 6, 2026-6pm CST Feb 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation