Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
22°F
-6°C
| Humidity | 89% |
| Wind Speed | S 6 mph |
| Barometer | 30.44 in (1031.1 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 14°F (-10°C) |
| Last update | 12 Jan 1:52 am CST |
Extended Forecast for
Jonesboro IL
Overnight
Low: 24 °F
Clear
Monday
High: 50 °F
Sunny
Monday Night
Low: 34 °F
Mostly Clear
Tuesday
High: 58 °F
Sunny
Tuesday Night
Low: 41 °F
Chance
ShowersWednesday
High: 46 °F
Slight Chance
Showers then
Slight Chance
Rain/SnowWednesday Night
Low: 19 °F
Mostly Cloudy
Thursday
High: 32 °F
Sunny
Thursday Night
Low: 24 °F
Mostly Cloudy
Detailed Forecast
Overnight
Clear, with a low around 24. South wind 3 to 6 mph.
Monday
Sunny, with a high near 50. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 34. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 58. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41. Southwest wind 6 to 10 mph becoming west northwest after midnight.
Wednesday
A slight chance of rain showers before 3pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 46. North northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 19. North northwest wind 11 to 17 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 32. North northwest wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 24. Light and variable wind becoming south southwest 5 to 8 mph in the evening.
Friday
Partly sunny, with a high near 44. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 23. West southwest wind 6 to 8 mph.
Saturday
Partly sunny, with a high near 35. West northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 13. West northwest wind around 8 mph.
Sunday
Sunny, with a high near 30. West wind 7 to 10 mph, with gusts as high as 18 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
1:17 am CST Jan 12, 2026
2am CST Jan 12, 2026-6pm CST Jan 18, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
