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

65°F

18°C

Humidity 40%
Wind Speed N 9 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 6 Apr 5:52 pm CDT
Extended Forecast for

3 Miles NE Jacob IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. North northeast wind 5 to 7 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. East northeast wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East wind 5 to 8 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind around 8 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. South wind 7 to 10 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. South southeast wind around 7 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. South southwest wind 5 to 8 mph.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 39. North northeast wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 59. East northeast wind 6 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 39. East wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 73. South wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind around 8 mph.
Thursday
Sunny, with a high near 75. South wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 54. South southeast wind around 7 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. South southwest wind 5 to 8 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Light and variable wind becoming south southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 60. Southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 83. South wind 6 to 15 mph, with gusts as high as 23 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 11 to 13 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. South southwest wind 13 to 18 mph, with gusts as high as 26 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 CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation