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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

83°F

28°C

Humidity 72%
Wind Speed SW 14 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 10 Jul 11:52 am CDT
Extended Forecast for

3 Miles S Jacob IL

Flood Watch July 10, 12:28pm until July 12, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 10, 12:28pm until July 12, 01:00am

    NOW until 1:00am Sun

    Flood Watch

  • This Afternoon

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 72. Light and variable wind. Chance of precipitation is 80%.

    Low: 72 °F

    T-storms
    Likely then
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 70%.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light north northeast wind becoming northeast 5 to 9 mph in the morning.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. East northeast wind around 6 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 90. Southwest wind around 6 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 72. Light and variable wind. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 70%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light north northeast wind becoming northeast 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 69. East northeast wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. East wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 70. Light and variable wind.
Wednesday
Sunny, with a high near 89. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 71. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 90. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Jacob IL
 37.71°N 89.54°W
Last Update:
11:26 am CDT Jul 10, 2026
Forecast Valid:
12pm CDT Jul 10, 2026-6pm CDT Jul 16, 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