Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
83°F
28°C
| Humidity | 41% |
| Wind Speed | S 6 mph |
| Barometer | 29.78 in (1008.2 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 21 Mar 5:52 pm CDT |
Extended Forecast for
2 Miles N Saint Johns IL
Tonight
Low: 62 °F
Mostly Clear
Sunday
High: 84 °F
Mostly Sunny
then Slight
Chance
ShowersSunday Night
Low: 38 °F
Chance
ShowersMonday
High: 58 °F
Mostly Sunny
Monday Night
Low: 40 °F
Mostly Cloudy
Tuesday
High: 63 °F
Partly Sunny
Tuesday Night
Low: 45 °F
Mostly Cloudy
Wednesday
High: 72 °F
Partly Sunny
Wednesday Night
Low: 56 °F
Slight Chance
T-storms
Detailed Forecast
Tonight
Mostly clear, with a low around 62. Light south wind becoming south southwest 5 to 9 mph in the evening.
Sunday
A 10 percent chance of showers after 5pm. Mostly sunny, with a high near 84. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 14 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 58. North northeast wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 63. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 45. East southeast wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 72. South wind 5 to 9 mph.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56. South wind 7 to 9 mph.
Thursday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 83. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 47. South southwest wind 11 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.
Friday
A chance of showers. Partly sunny, with a high near 58. North northeast wind 11 to 13 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 38. North northeast wind 8 to 10 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 57. Northeast wind around 9 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
5:36 pm CDT Mar 21, 2026
6pm CDT Mar 21, 2026-6pm CDT Mar 28, 2026
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