Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
77°F
25°C
| Humidity | 79% |
| Wind Speed | SE 7 mph |
| Barometer | 30.03 in |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 5 Aug 7:49 pm CDT |
Extended Forecast for
2 Miles SW Alto Pass IL
Tonight
Low: 71 °F
Partly Cloudy
Thursday
High: 86 °F
Chance
T-stormsThursday Night
Low: 72 °F
Mostly Cloudy
then Chance
T-stormsFriday
High: 88 °F
Showers
LikelyFriday Night
Low: 72 °F
Chance
T-stormsSaturday
High: 90 °F
Chance
T-storms then
Mostly SunnySaturday Night
Low: 72 °F
Mostly Clear
Sunday
High: 91 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 71. Light south southeast wind.
Thursday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 86. Calm wind becoming south southeast 5 to 8 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 72. Light south wind.
Friday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light south southwest wind.
Saturday
A chance of thunderstorms before 7am. Mostly sunny, with a high near 90. Light south southwest wind. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 91. South southwest wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 74. South wind around 6 mph.
Monday
Sunny, with a high near 92. South southwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 75. South wind 7 to 9 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Southwest wind around 8 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind around 7 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind around 6 mph becoming northwest in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles SW Alto Pass IL
37.55°N 89.35°W
37.55°N 89.35°W
7:56 pm CDT Aug 5, 2026
8pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026
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