Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

31°F

-1°C

Humidity 79%
Wind Speed N 10 mph
Barometer 30.28 in (1025.7 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 7 Feb 3:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Today

    Today: Sunny, with a high near 34. North northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Southeast wind 3 to 6 mph.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 44. South southeast wind 6 to 8 mph.

    High: 44 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming south southwest around 5 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Southwest wind 6 to 9 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers likely.  Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming north after midnight.

    Low: 39 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, mainly before noon.  Mostly cloudy, with a high near 51. North wind 6 to 9 mph.

    High: 51 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 34. North northeast wind around 6 mph becoming light and variable in the afternoon.
Tonight
Partly cloudy, with a low around 24. Southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 44. South southeast wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 29. East southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 55. Calm wind becoming south southwest around 5 mph.
Monday Night
Mostly clear, with a low around 41. South wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 66. Southwest wind 6 to 9 mph.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming north after midnight.
Wednesday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 51. North wind 6 to 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 32. Northeast wind around 6 mph.
Thursday
A chance of showers. Mostly cloudy, with a high near 48. East wind 6 to 8 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34. East northeast wind around 7 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 48. East wind 7 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
3:16 am CST Feb 7, 2026
4am CST Feb 7, 2026-6pm CST Feb 13, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database