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

63°F

17°C

Humidity 76%
Wind Speed Calm
Barometer 30.18 in (1021.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Aug 8:52 pm CDT
Extended Forecast for

Jonesboro IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Light southeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 80. Calm wind becoming south around 5 mph.

    High: 80 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming clear, with a low around 56. Calm wind.

    Low: 56 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 86. Calm wind becoming east around 6 mph in the afternoon.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Northeast wind 3 to 5 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Northeast wind 5 to 7 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. Northeast wind around 6 mph.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 85. Northeast wind 5 to 7 mph.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. Northeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Light southeast wind.
Thursday
Partly sunny, with a high near 80. Calm wind becoming south around 5 mph.
Thursday Night
Mostly cloudy, then gradually becoming clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 86. Calm wind becoming east around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60. Northeast wind 3 to 5 mph.
Saturday
Sunny, with a high near 86. Northeast wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 60. Northeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 85. Northeast wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 59. Northeast wind 3 to 6 mph.
Labor Day
Sunny, with a high near 87. Northeast wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 60. Light east northeast wind.
Tuesday
Sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 62. Light and variable wind.
Wednesday
Sunny, with a high near 88. Calm wind becoming west southwest 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jonesboro IL
 37.46°N 89.27°W
Last Update:
5:46 pm CDT Aug 27, 2025
Forecast Valid:
9pm CDT Aug 27, 2025-6pm CDT Sep 3, 2025
 
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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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation