Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
A Few Clouds
59°F
15°C
| Humidity | 87% |
| Wind Speed | SE 3 mph |
| Barometer | 29.95 in (1013.9 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 4:52 am CDT |
Extended Forecast for
2 Miles N Saint Johns IL
Today
High: 84 °F
Mostly Sunny
then Slight
Chance
T-stormsTonight
Low: 51 °F
Slight Chance
T-storms then
ShowersSaturday
High: 65 °F⇓
Showers
LikelySaturday Night
Low: 38 °F
Decreasing
CloudsSunday
High: 66 °F
Sunny
Sunday Night
Low: 42 °F
Mostly Clear
Monday
High: 71 °F
Sunny
Monday Night
Low: 51 °F
Clear
Tuesday
High: 77 °F
Mostly Sunny
Detailed Forecast
Today
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 23 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 51. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a temperature falling to around 54 by 8am. Northwest wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 38. North northwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 66. West wind 5 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 42. Northwest wind around 6 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 71. East wind 5 to 7 mph becoming south in the afternoon.
Monday Night
Clear, with a low around 51. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 77. South southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 55. South southwest wind 7 to 10 mph.
Wednesday
Sunny, with a high near 80. South southwest wind 7 to 10 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind around 7 mph.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. South wind 7 to 13 mph, with gusts as high as 18 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles N Saint Johns IL
38.06°N 89.24°W
38.06°N 89.24°W
3:06 am CDT Apr 17, 2026
5am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
