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.

A Few Clouds

84°F

29°C

Humidity 36%
Wind Speed NE 5 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Jun 3:52 pm CDT
Extended Forecast for

4 Miles NE Jacob IL

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 5am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 83. South southwest wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 68. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    Low: 68 °F

    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. Northwest wind around 9 mph.

    High: 79 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North wind 5 to 8 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Light north northeast wind.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 84. Calm wind.
Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 85. Calm wind.
Saturday Night
A 30 percent chance of showers after 5am. Partly cloudy, with a low around 67. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 83. South southwest wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 68. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Monday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. Northwest wind around 9 mph.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 80. Light north northeast wind.
Tuesday Night
Partly cloudy, with a low around 63. Calm wind.
Wednesday
Mostly sunny, with a high near 82. Light west northwest wind.
Wednesday Night
Mostly clear, with a low around 63. Light west northwest wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Jacob IL
 37.8°N 89.51°W
Last Update:
3:01 pm CDT Jun 19, 2026
Forecast Valid:
4pm CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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