Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

A Few Clouds

47°F

8°C

Humidity 59%
Wind Speed W 12 G 24 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 26 Nov 12:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Overnight

    Overnight: Mostly clear, with a low around 35. West wind 16 to 18 mph, with gusts as high as 33 mph.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45. Breezy, with a west northwest wind 13 to 21 mph, with gusts as high as 32 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. West northwest wind 6 to 10 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 43. West northwest wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 39. Light and variable wind.

    High: 39 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of snow showers after midnight.  Mostly cloudy, with a low around 28. Calm wind becoming southeast 5 to 8 mph after midnight.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Rain and snow showers likely before noon, then rain showers.  Cloudy, with a high near 41. South wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 41 °F

    Rain/Snow
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers.  Cloudy, with a low around 30. South wind 7 to 10 mph becoming west northwest after midnight.

    Low: 30 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 35. West wind 16 to 18 mph, with gusts as high as 33 mph.
Wednesday
Sunny, with a high near 45. Breezy, with a west northwest wind 13 to 21 mph, with gusts as high as 32 mph.
Wednesday Night
Increasing clouds, with a low around 29. West northwest wind 6 to 10 mph.
Thanksgiving Day
Sunny, with a high near 43. West northwest wind 7 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 23. West northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 39. Light and variable wind.
Friday Night
A 40 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Calm wind becoming southeast 5 to 8 mph after midnight.
Saturday
Rain and snow showers likely before noon, then rain showers. Cloudy, with a high near 41. South wind 9 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Showers. Cloudy, with a low around 30. South wind 7 to 10 mph becoming west northwest after midnight.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 37. Northwest wind 9 to 11 mph.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 21. North wind 6 to 8 mph.
Monday
A chance of snow showers. Mostly cloudy, with a high near 34. North wind around 7 mph.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 22. North wind around 6 mph.
Tuesday
A slight chance of snow showers. Partly sunny, with a high near 35. North northwest wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
11:46 pm CST Nov 25, 2025
1am CST Nov 26, 2025-6pm CST Dec 2, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database