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 and Breezy

76°F

24°C

Humidity 47%
Wind Speed S 25 G 39 mph
Barometer 29.96 in (1014.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 30 Mar 6:52 pm CDT
Extended Forecast for

3 Miles NE Jacob IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 30 mph.

    High: 83 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. South southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 82. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 66 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 62. South wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. South wind 9 to 15 mph, with gusts as high as 21 mph.

    High: 79 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 30 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. South southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 82. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 62. South wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. South wind 9 to 15 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind around 11 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South southwest wind 11 to 17 mph, with gusts as high as 23 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 42. West northwest wind 11 to 13 mph, with gusts as high as 20 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 60. West northwest wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 37. North wind 6 to 10 mph.
Monday
Sunny, with a high near 64. North wind 6 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Jacob IL
 37.78°N 89.51°W
Last Update:
3:12 pm CDT Mar 30, 2026
Forecast Valid:
6pm CDT Mar 30, 2026-6pm CDT Apr 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