National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

66°F

19°C

Humidity 88%
Wind Speed N 8 mph
Barometer 30.15 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 2 Oct 1:52 pm CDT
Extended Forecast for

Jonesboro IL

  • This Afternoon

    This Afternoon: A chance of showers before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 69. North northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Northeast wind around 8 mph.

    Low: 56 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Northeast wind around 8 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Light northeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. North wind 3 to 6 mph.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73. North northeast wind 6 to 9 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47. Northeast wind around 5 mph.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. East wind 3 to 5 mph.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 69. North northeast wind around 10 mph. Chance of precipitation is 30%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Northeast wind around 8 mph.
Saturday
Mostly sunny, with a high near 73. Northeast wind around 8 mph.
Saturday Night
Mostly cloudy, with a low around 57. Light northeast wind.
Sunday
Mostly sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 55. North wind 3 to 6 mph.
Monday
Sunny, with a high near 73. North northeast wind 6 to 9 mph.
Monday Night
Clear, with a low around 47. Northeast wind around 5 mph.
Tuesday
Sunny, with a high near 74. East wind 3 to 5 mph.
Tuesday Night
Clear, with a low around 48. Calm wind.
Wednesday
Sunny, with a high near 80. Light and variable wind.
Wednesday Night
Clear, with a low around 53. Calm wind.
Thursday
Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesboro IL
 37.46°N 89.27°W
Last Update:
2:11 pm CDT Oct 2, 2026
Forecast Valid:
2pm CDT Oct 2, 2026-6pm CDT Oct 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