


Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Mostly Cloudy
76°F
24°C
Humidity | 97% |
Wind Speed | Calm |
Barometer | 30.02 in (1016.2 mb) |
Dewpoint | 75°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 75°F (24°C) |
Last update | 14 Jul 9:52 pm CDT |
Extended Forecast for
De Soto IL
Tonight
Low: 72 °F
Mostly Cloudy
then Slight
Chance
T-storms and
Patchy FogTuesday
High: 88 °F
Slight Chance
T-storms and
Patchy Fog
then T-storms
LikelyTuesday Night
Low: 72 °F
T-storms
Likely then
Slight Chance
T-stormsWednesday
High: 91 °F
Mostly Sunny
then Chance
T-stormsWednesday Night
Low: 75 °F
Slight Chance
T-stormsThursday
High: 92 °F
Mostly Sunny
then Chance
T-stormsThursday Night
Low: 73 °F
Chance
T-stormsFriday
High: 89 °F
Chance
T-stormsFriday Night
Low: 74 °F
Slight Chance
T-storms
Detailed Forecast
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 72. Calm wind.
Tuesday
Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 88. Calm wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely before 4am, then a slight chance of showers. Partly cloudy, with a low around 72. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Southwest wind 3 to 8 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 5 to 8 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. West southwest wind around 6 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. West southwest wind 3 to 5 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light south wind.
Saturday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 91. South southwest wind 3 to 7 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Southwest wind 3 to 6 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. South southwest wind 5 to 7 mph.
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ABOUT THIS FORECAST
Point Forecast:
De Soto IL
37.81°N 89.23°W
37.81°N 89.23°W
8:32 pm CDT Jul 14, 2025
10pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025