Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

71°F

22°C

Humidity 24%
Wind Speed S 16 G 28 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 29 Mar 5:52 pm CDT
Extended Forecast for

2 Miles N Saint Johns IL

Red Flag Warning until March 29, 07:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning until March 29, 07:00pm

    NOW until 7:00pm Sun

    Red Flag Warning

  • Tonight

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.

    High: 79 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 30 mph.

    High: 82 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 61. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm.  High near 75. South southwest wind 8 to 11 mph.  Chance of precipitation is 80%.

    High: 75 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm.  Low around 58. South wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm.  Cloudy, with a high near 72. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 72 °F

    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. South southwest wind 9 to 11 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 79. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.
Monday Night
Mostly clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 82. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 30 mph.
Tuesday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 61. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 75. South southwest wind 8 to 11 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 58. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 72. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 52. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 73. South wind 9 to 11 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 58. South southeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South wind 11 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. South southwest wind 14 to 16 mph becoming west after midnight. Winds could gust as high as 23 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 63. West northwest wind 14 to 16 mph, with gusts as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
5:51 pm CDT Mar 29, 2026
6pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
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Additional Resources

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