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 with Haze

59°F

15°C

Humidity 81%
Wind Speed E 6 mph
Barometer 30.35 in (1027.6 mb)
Dewpoint 53°F (12°C)
Visibility 6.00 mi
Last update 11 Apr 9:52 am CDT
Extended Forecast for

3 Miles NE Jacob IL

  • Today

    Today: Isolated showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Light and variable wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Southeast wind around 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 82. Breezy, with a south southwest wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 82 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 86. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 86 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Isolated showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Light and variable wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 59. Southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 82. Breezy, with a south southwest wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 67. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 86. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South southwest wind 7 to 10 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. South southwest wind 5 to 8 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. South southwest wind 6 to 10 mph, with gusts as high as 18 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:
8:42 am CDT Apr 11, 2026
Forecast Valid:
10am CDT Apr 11, 2026-6pm CDT Apr 17, 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