Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
82°F
28°C
| Humidity | 44% |
| Wind Speed | W 8 mph |
| Barometer | 30.03 in (1016.6 mb) |
| Dewpoint | 58°F (14°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 12 Oct 10:52 am CDT |
Extended Forecast for
Alto Pass IL
Columbus Day
High: 88 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 70 °F
Mostly Clear
then Slight
Chance
T-stormsWednesday
High: 84 °F
Showers
Likely then
ShowersWednesday Night
Low: 66 °F
Chance
T-storms then
Showers
LikelyThursday
High: 82 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 57 °F
Chance
ShowersFriday
High: 64 °F
Mostly Sunny
Detailed Forecast
Columbus Day
Sunny, with a high near 88. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 66. Southwest wind around 7 mph.
Tuesday
Sunny, with a high near 91. South southwest wind 6 to 10 mph.
Tuesday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South southwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Showers and possibly a thunderstorm. High near 84. South southwest wind 5 to 7 mph. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. West wind 5 to 13 mph.
Friday
Mostly sunny, with a high near 64. North northwest wind 16 to 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 42. North wind 9 to 16 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 60. Northeast wind around 8 mph.
Saturday Night
Clear, with a low around 39. Calm wind.
Sunday
Sunny, with a high near 67. Calm wind becoming south around 6 mph in the morning.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Alto Pass IL
37.57°N 89.32°W
37.57°N 89.32°W
7:56 am CDT Oct 12, 2026
11am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
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