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

62°F

17°C

Humidity 84%
Wind Speed S 5 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 6:52 am CDT
Extended Forecast for

Jonesboro IL

  • Columbus Day

    Columbus Day: Sunny, with a high near 90. Light south southwest wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Southwest wind 5 to 7 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Southwest wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Clear then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. Southwest wind 5 to 7 mph. Chance of precipitation is 80%.

    High: 86 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Light and variable wind becoming west southwest 6 to 11 mph in the morning.

    High: 85 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 57. West wind 5 to 11 mph.

    Low: 57 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 66. Breezy, with a north northwest wind 16 to 20 mph, with gusts as high as 28 mph.

    High: 66 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Sunny, with a high near 90. Light south southwest wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Tonight
Mostly clear, with a low around 65. Southwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 92. Southwest wind 5 to 10 mph.
Tuesday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South southwest wind around 5 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. Southwest wind 5 to 7 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Light and variable wind becoming west southwest 6 to 11 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. West wind 5 to 11 mph.
Friday
Mostly sunny, with a high near 66. Breezy, with a north northwest wind 16 to 20 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 42. North wind 9 to 17 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 61. Northeast wind 7 to 9 mph.
Saturday Night
Clear, with a low around 38. Light east wind.
Sunday
Sunny, with a high near 69. Calm wind becoming south 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:
5:56 am CDT Oct 12, 2026
Forecast Valid:
7am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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