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Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Mostly Cloudy
72°F
22°C
| Humidity | 82% |
| Wind Speed | Calm |
| Barometer | 29.94 in (1013.5 mb) |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 20 Jun 10:52 pm CDT |
Extended Forecast for
2 Miles N Saint Johns IL
Flood Watch June 21, 01:00pm until June 22, 07:00am
Tonight
Low: 66 °F
Partly Cloudy
Sunday
High: 88 °F
Chance
T-storms then
Showers
LikelySunday Night
Low: 69 °F
Heavy Rain
then ShowersMonday
High: 80 °F
Chance
ShowersMonday Night
Low: 61 °F
Partly Cloudy
Tuesday
High: 82 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 85 °F
Mostly Sunny
Wednesday Night
Low: 63 °F
Partly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 66. Calm wind.
Sunday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 88. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Some of the storms could produce heavy rainfall. Low around 69. South wind 10 to 16 mph becoming west in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Monday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. West wind 8 to 10 mph becoming north northwest in the afternoon. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 61. North wind 5 to 9 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 82. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
Mostly sunny, with a high near 85. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 63. Light and variable wind.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind becoming west northwest around 5 mph in the afternoon.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Light and variable wind.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light south wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. South southwest wind 5 to 10 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles N Saint Johns IL
38.06°N 89.24°W
38.06°N 89.24°W
9:31 pm CDT Jun 20, 2026
10pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
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