Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
43°F
6°C
| Humidity | 38% |
| Wind Speed | SW 15 G 23 mph |
| Barometer | 30.35 in (1028.1 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 36°F (2°C) |
| Last update | 12 Jan 10:52 am CST |
Extended Forecast for
Jonesboro IL
Today
High: 50 °F
Sunny
Tonight
Low: 34 °F
Mostly Clear
Tuesday
High: 58 °F
Sunny
Tuesday Night
Low: 41 °F
Chance
ShowersWednesday
High: 46 °F
Slight Chance
Showers then
Partly SunnyWednesday Night
Low: 19 °F
Partly Cloudy
Thursday
High: 32 °F
Sunny
Thursday Night
Low: 24 °F
Mostly Cloudy
Friday
High: 44 °F
Partly Sunny
Detailed Forecast
Today
Sunny, with a high near 50. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 34. South southwest wind around 8 mph.
Tuesday
Sunny, with a high near 58. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A 40 percent chance of showers, mainly after midnight. Increasing clouds, with a low around 41. Southwest wind 5 to 9 mph becoming west northwest after midnight.
Wednesday
A 20 percent chance of showers before noon. Partly sunny, 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.
Wednesday Night
Partly cloudy, with a low around 19. North northwest wind 9 to 17 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 32. North northwest wind 5 to 8 mph becoming light and variable in the afternoon.
Thursday Night
Mostly cloudy, with a low around 24. Light south southwest wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Friday
Partly sunny, with a high near 44. West wind 9 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 23. West wind around 8 mph.
Saturday
Partly sunny, with a high near 35. West 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 9 mph.
Sunday
Sunny, with a high near 30. West northwest wind 7 to 10 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Jonesboro IL
37.46°N 89.27°W
37.46°N 89.27°W
10:57 am CST Jan 12, 2026
11am CST Jan 12, 2026-6pm CST Jan 18, 2026
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