Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
40°F
4°C
| Humidity | 58% |
| Wind Speed | W 6 mph |
| Barometer | 30.06 in (1018.1 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 36°F (2°C) |
| Last update | 31 Dec 11:52 am CST |
Extended Forecast for
Jonesboro IL
This Afternoon
High: 44 °F
Mostly Sunny
Tonight
Low: 28 °F
Mostly Clear
New Year's Day
High: 44 °F
Mostly Sunny
Thursday Night
Low: 33 °F
Increasing
CloudsFriday
High: 48 °F
Cloudy
Friday Night
Low: 29 °F
Mostly Cloudy
Saturday
High: 42 °F
Mostly Sunny
Saturday Night
Low: 25 °F
Mostly Clear
Sunday
High: 45 °F
Partly Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 44. West northwest wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 28. Calm wind.
New Year's Day
Mostly sunny, with a high near 44. Light and variable wind.
Thursday Night
Increasing clouds, with a low around 33. Calm wind.
Friday
Cloudy, with a high near 48. Calm wind becoming northeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 29. North northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 42. North northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 25. Calm wind.
Sunday
Partly sunny, with a high near 45. Calm wind becoming south southeast around 5 mph.
Sunday Night
Partly cloudy, with a low around 34. South wind 3 to 6 mph.
Monday
Partly sunny, with a high near 55. South southwest wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 40. Southwest wind around 6 mph.
Tuesday
Partly sunny, with a high near 55. West wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Jonesboro IL
37.46°N 89.27°W
37.46°N 89.27°W
10:26 am CST Dec 31, 2025
12pm CST Dec 31, 2025-6pm CST Jan 6, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
