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

77°F

25°C

Humidity 30%
Wind Speed SW 12 G 22 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 9 Apr 4:52 pm CDT
Extended Forecast for

3 Miles NE Jacob IL

  • Tonight

    Tonight: Mostly clear, with a low around 55. South wind 7 to 9 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 78. South wind 8 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 78 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Light and variable wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: 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 81. South southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 81 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South southwest wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82. South southwest wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 55. South wind 7 to 9 mph.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 78. South wind 8 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Light and variable wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 59. Southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 81. South southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South southwest wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82. South southwest wind 13 to 17 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 68. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind 11 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 6 to 10 mph.
Thursday
A chance of showers. Partly sunny, with a high near 79. South southwest wind 6 to 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Jacob IL
 37.78°N 89.51°W
Last Update:
4:47 pm CDT Apr 9, 2026
Forecast Valid:
5pm CDT Apr 9, 2026-6pm CDT Apr 16, 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