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.

Fog/Mist

67°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 30.05 in (1017.0 mb)
Dewpoint 65°F (18°C)
Visibility 6.00 mi
Last update 12 Jun 2:52 am CDT
Extended Forecast for

Jonesboro IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 85. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 85 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight.

    Low: 69 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 82. South wind 6 to 10 mph. Chance of precipitation is 90%.

    High: 82 °F

    Showers
    Likely then
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South wind around 7 mph. Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. South southwest wind around 7 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 70. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers. Partly cloudy, with a low around 70. Light and variable wind.

    Low: 70 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 85. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight.
Friday
Showers and possibly a thunderstorm. High near 82. South wind 6 to 10 mph. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South wind around 7 mph. Chance of precipitation is 70%.
Saturday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. South southwest wind around 7 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 70. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
A chance of showers. Partly cloudy, with a low around 70. Light and variable wind.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southeast wind 3 to 5 mph.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. South southwest wind 5 to 9 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 7 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Jonesboro IL
 37.46°N 89.27°W
Last Update:
2:15 am CDT Jun 12, 2025
Forecast Valid:
3am CDT Jun 12, 2025-6pm CDT Jun 18, 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