Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
79°F
26°C
| Humidity | 67% |
| Wind Speed | SW 10 mph |
| Barometer | 29.86 in (1010.7 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 18 Jun 8:52 pm CDT |
Extended Forecast for
3 Miles WSW Saint Johns IL
Tonight
Low: 68 °F
Severe
ThunderstormsJuneteenth
High: 85 °F
Sunny
Thursday Night
Low: 67 °F
Mostly Clear
Friday
High: 89 °F
Sunny
Friday Night
Low: 72 °F
Mostly Clear
Saturday
High: 92 °F
Sunny
Saturday Night
Low: 76 °F
Clear
Sunday
High: 94 °F
Sunny
Sunday Night
Low: 75 °F
Clear
Detailed Forecast
Tonight
A 40 percent chance of showers and thunderstorms before 1am. Some of the storms could be severe. Partly cloudy, with a low around 68. Southwest wind 6 to 8 mph.
Juneteenth
Sunny, with a high near 85. West northwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 67. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 72. South wind around 7 mph.
Saturday
Sunny, with a high near 92. South wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 76. South wind 6 to 9 mph.
Sunday
Sunny, with a high near 94. South wind 6 to 9 mph.
Sunday Night
Clear, with a low around 75. South wind 3 to 7 mph.
Monday
Sunny, with a high near 94. South wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 75. South wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 93. Calm wind becoming south around 6 mph in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Saint Johns IL
38.01°N 89.27°W
38.01°N 89.27°W
8:00 pm CDT Jun 18, 2025
9pm CDT Jun 18, 2025-6pm CDT Jun 25, 2025
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