Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
51°F
11°C
| Humidity | 64% |
| Wind Speed | NE 10 mph |
| Barometer | 30.23 in (1023.7 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 47°F (8°C) |
| Last update | 20 Apr 12:52 am CDT |
Extended Forecast for
Carbondale IL
Overnight

Low: 42 °F
Mostly Clear
Monday

High: 70 °F
Sunny
Monday Night

Low: 51 °F
Mostly Clear
Tuesday

High: 78 °F
Mostly Sunny
Tuesday Night

Low: 55 °F
Mostly Clear
Wednesday

High: 78 °F
Sunny
Wednesday Night

Low: 56 °F
Clear
Thursday

High: 81 °F
Mostly Sunny
Thursday Night
Low: 63 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Overnight
Mostly clear, with a low around 42. Light northeast wind.
Monday
Sunny, with a high near 70. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 51. South southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 55. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 10 mph.
Wednesday Night
Clear, with a low around 56. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 77. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Southwest wind 6 to 8 mph becoming north after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. North wind 6 to 9 mph.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 53. North northeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. North northeast wind 6 to 8 mph.
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ABOUT THIS FORECAST
Point Forecast:
Carbondale IL
37.72°N 89.2°W
37.72°N 89.2°W
1:26 am CDT Apr 20, 2026
1am CDT Apr 20, 2026-6pm CDT Apr 26, 2026


