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.

Overcast

40°F

4°C

Humidity 93%
Wind Speed NE 8 mph
Barometer 30.22 in (1023.6 mb)
Dewpoint 38°F (3°C)
Visibility 7.00 mi
Wind Chill35°F (2°C)
Last update 2 Mar 11:52 am CST
Extended Forecast for

Jonesboro IL

  • Today

    Today: Cloudy, with a high near 44. Northeast wind around 7 mph.

    High: 44 °F

    Cloudy

  • Tonight

    Tonight: A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 41. East northeast wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 41 °F

    Mostly Cloudy
    then Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 4pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 71. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 58. South wind 6 to 8 mph.

    Low: 58 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 9am. Mostly cloudy, with a high near 73. South southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 73 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers. High near 71. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind 6 to 8 mph.

    Low: 60 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy, with a high near 44. Northeast wind around 7 mph.
Tonight
A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 41. East northeast wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers before 4pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 71. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 58. South wind 6 to 8 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 9am. Mostly cloudy, with a high near 73. South southwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Thursday
Showers. High near 71. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Friday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. South wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers and possibly a thunderstorm. Cloudy, with a high near 70. Southwest wind 7 to 10 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. West wind around 6 mph becoming light and variable in the evening.
Sunday
A chance of showers. Mostly cloudy, with a high near 65. Light and variable wind becoming south 5 to 8 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:
10:51 am CST Mar 2, 2026
Forecast Valid:
11am CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
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