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

53°F

12°C

Humidity 52%
Wind Speed Calm
Barometer 30.16 in (1021.3 mb)
Dewpoint 36°F (2°C)
Visibility 9.00 mi
Last update 12 Nov 6:52 pm CST
Extended Forecast for

3 Miles NNE Jacob IL

  • Tonight

    Tonight: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. South wind around 6 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74. South southwest wind 6 to 9 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. South southwest wind 6 to 9 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. Southwest wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 18 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63. North northwest wind 5 to 8 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Light and variable wind.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 36. Calm wind.
Thursday
Mostly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 49. South wind around 6 mph.
Friday
Mostly sunny, with a high near 74. South southwest wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 57. South southwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 76. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 48. Southwest wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 18 mph.
Sunday
Sunny, with a high near 63. North northwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 40. Light and variable wind.
Monday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61. Light east northeast wind becoming east southeast 5 to 9 mph in the morning.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. East southeast wind 7 to 9 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 62. South southeast wind 7 to 10 mph becoming west in the afternoon.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 43. East southeast wind around 6 mph becoming light and variable after midnight.
Wednesday
A chance of showers. Mostly cloudy, with a high near 58. Light and variable wind becoming southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Jacob IL
 37.78°N 89.51°W
Last Update:
3:16 pm CST Nov 12, 2025
Forecast Valid:
7pm CST Nov 12, 2025-6pm CST Nov 19, 2025
 
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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