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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in (1017.0 mb)
Dewpoint 72°F (22°C)
Visibility 0.25 mi
Last update 30 Jul 5:52 am CDT
Extended Forecast for

Jonesboro IL

Extreme Heat Warning July 30, 06:52am until July 30, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 06:52am until July 30, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Today

    High: 95 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. Light and variable wind.

    Low: 76 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. North wind 3 to 8 mph. Chance of precipitation is 50%.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 69. North wind around 8 mph.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 80. North northeast wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. North northeast wind 6 to 9 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Northeast wind around 8 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. North northeast wind 3 to 6 mph.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 95. Heat index values as high as 109. Light and variable wind.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. Light and variable wind.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. North wind 3 to 8 mph. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 69. North wind around 8 mph.
Friday
Partly sunny, with a high near 80. North northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 64. North northeast wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 82. Northeast wind around 8 mph.
Saturday Night
Mostly clear, with a low around 62. North northeast wind 3 to 6 mph.
Sunday
Sunny, with a high near 85. Light east northeast wind.
Sunday Night
Partly cloudy, with a low around 68. Light east northeast wind.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Calm wind becoming south around 5 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light and variable wind.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesboro IL
 37.46°N 89.27°W
Last Update:
5:46 am CDT Jul 30, 2025
Forecast Valid:
6am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
 
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