National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

69°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 30.02 in (1016.3 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 25 May 8:52 pm CDT
Extended Forecast for

2 Miles S Jacob IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 79. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 10pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Light north northeast wind.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 5 to 8 mph.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 61. East northeast wind 3 to 7 mph.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. Calm wind.
Tuesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 79. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 10pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 64. Light north northeast wind.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 5 to 8 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 61. East northeast wind 3 to 7 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 59. Northeast wind 5 to 8 mph.
Sunday
Mostly sunny, with a high near 80. Northeast wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 57. Northeast wind 5 to 9 mph becoming light in the evening.
Monday
Sunny, with a high near 81. Northeast wind 5 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Jacob IL
 37.73°N 89.54°W
Last Update:
1:26 pm CDT May 25, 2026
Forecast Valid:
9pm CDT May 25, 2026-6pm CDT Jun 1, 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