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

63°F

17°C

Humidity 68%
Wind Speed S 13 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 30 Mar 3:52 am CDT
Extended Forecast for

3 Miles NE Jacob IL

  • Today

    Today: Mostly sunny, with a high near 80. Breezy, with a south southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 63. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 62. South southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. South wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 65. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 61. South wind 11 to 17 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 80. Breezy, with a south southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.
Tonight
Mostly clear, with a low around 63. South southwest wind 13 to 16 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.
Tuesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 62. South southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. South wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 65. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 61. South wind 11 to 17 mph, with gusts as high as 25 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 59. South southeast wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. West wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers. Mostly sunny, with a high near 60. Northwest wind 10 to 14 mph, with gusts as high as 21 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:
1:26 am CDT Mar 30, 2026
Forecast Valid:
4am CDT Mar 30, 2026-6pm CDT Apr 5, 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