Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
Jonesboro IL
Today
High: 83 °F
Patchy Fog
then Mostly
SunnyTonight
Low: 62 °F
Mostly Cloudy
Monday
High: 82 °F
Mostly Sunny
Monday Night
Low: 64 °F
Decreasing
CloudsTuesday
High: 84 °F
Sunny
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 88 °F
Mostly Sunny
then Slight
Chance
ShowersWednesday Night
Low: 68 °F
Mostly Clear
Thursday
High: 88 °F
Sunny
Detailed Forecast
Today
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 83. Calm wind becoming north northwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 62. Calm wind.
Monday
Mostly sunny, with a high near 82. Calm wind.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Calm wind.
Tuesday
Sunny, with a high near 84. Light east southeast wind.
Tuesday Night
Mostly clear, with a low around 66. Calm wind.
Wednesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 88. Calm wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
Sunny, with a high near 88. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
Sunny, with a high near 87. Light and variable wind.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Jonesboro IL
37.46°N 89.27°W
37.46°N 89.27°W
3:01 am CDT Aug 23, 2026
4am CDT Aug 23, 2026-6pm CDT Aug 29, 2026
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