Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
A Few Clouds
82°F
28°C
| Humidity | 46% |
| Wind Speed | SW 10 mph |
| Barometer | 29.67 in (1004.3 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 22 Mar 6:52 pm CDT |
Extended Forecast for
2 Miles N Saint Johns IL
Severe T-storm Watch until March 23, 12:00am
NOW until 12:00am Mon
Severe T-storm Watch
Tonight
Low: 35 °F
Severe
Thunderstorms
then Mostly
ClearMonday
High: 55 °F
Sunny
Monday Night
Low: 38 °F
Mostly Cloudy
Tuesday
High: 62 °F
Mostly Sunny
Tuesday Night
Low: 42 °F
Partly Cloudy
Wednesday
High: 73 °F
Mostly Sunny
Wednesday Night
Low: 59 °F
Partly Cloudy
Thursday
High: 85 °F
Sunny
Detailed Forecast
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 35. North wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Monday
Sunny, with a high near 55. North northeast wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 38. East northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 62. East southeast wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 42. Light east southeast wind.
Wednesday
Mostly sunny, with a high near 73. Light south wind becoming south southwest 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 59. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 85. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 42. South southwest wind around 14 mph becoming north after midnight. Winds could gust as high as 23 mph.
Friday
A chance of showers. Partly sunny, with a high near 53. North wind 13 to 15 mph, with gusts as high as 23 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 32. North wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 56. North northeast wind 6 to 8 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 36. Southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 64. South southwest wind 5 to 9 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
6:11 pm CDT Mar 22, 2026
7pm CDT Mar 22, 2026-6pm CDT Mar 29, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
