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.

Partly Cloudy

85°F

29°C

Humidity 55%
Wind Speed NW 7 mph
Barometer 30.06 in (1017.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Jul 10:52 am CDT
Extended Forecast for

Jonesboro IL

  • Today

    Today: Mostly sunny, with a high near 90. Calm wind.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 71. Calm wind.

    Low: 71 °F

    Clear

  • Independence Day

    Independence Day: Sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 72. Calm wind.

    Low: 72 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 92. Calm wind becoming south around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. Light south wind.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Light and variable wind.

    Low: 73 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming north northwest around 5 mph.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 90. Calm wind.
Tonight
Clear, with a low around 71. Calm wind.
Independence Day
Sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Clear, with a low around 72. Calm wind.
Saturday
Sunny, with a high near 92. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. Light south wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Light and variable wind.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming north northwest around 5 mph.
Monday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Light east northeast wind.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light and variable wind.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming west northwest around 6 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:
11:16 am CDT Jul 3, 2025
Forecast Valid:
11am CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation