Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
48°F
9°C
| Humidity | 54% |
| Wind Speed | SW 17 G 28 mph |
| Barometer | 29.92 in (1013.2 mb) |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Wind Chill | 42°F (6°C) |
| Last update | 13 Mar 8:52 am CDT |
Extended Forecast for
3 Miles WSW Saint Johns IL
Today
High: 63 °F
Decreasing
CloudsTonight
Low: 37 °F
Mostly Clear
Saturday
High: 67 °F
Mostly Sunny
Saturday Night
Low: 55 °F
Partly Cloudy
Sunday
High: 71 °F
Breezy.
Slight Chance
Showers then
Showers
LikelySunday Night
Low: 26 °F
Breezy.
Showers then
Rain/SnowMonday
High: 32 °F
Slight Chance
Snow Showers
and BreezyMonday Night
Low: 15 °F
Partly Cloudy
and Blustery
then Mostly
ClearTuesday
High: 37 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, then gradually becoming sunny, with a high near 63. West northwest wind 14 to 18 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 37. Northwest wind around 6 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 67. East wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 55. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 16 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 22 to 24 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 32. Breezy, with a west northwest wind 20 to 22 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 15. Blustery, with a northwest wind 11 to 20 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 37. Northwest wind around 9 mph.
Tuesday Night
Mostly cloudy, with a low around 27. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy, with a high near 57. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 40. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 68. South southwest wind 6 to 8 mph.
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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
9:27 am CDT Mar 13, 2026
9am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
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