Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

27°F

-3°C

Humidity 89%
Wind Speed Calm
Barometer 30.39 in (1029.4 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 27 Nov 8:52 pm CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Tonight

    Tonight: Clear, with a low around 24. Calm wind becoming northwest around 6 mph after midnight.

    Low: 24 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 40. North northwest wind around 5 mph becoming calm  in the afternoon.

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly after 3am.  Mostly cloudy, with a low around 30. Calm wind becoming southeast 5 to 8 mph after midnight.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow, possibly mixed with rain and sleet before noon, then rain and snow between noon and 3pm, then rain after 3pm.  High near 41. Southeast wind 9 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 100%.

    High: 41 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Rain before 3am, then a slight chance of rain and snow.  Low around 28. South wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph.  Chance of precipitation is 80%.

    Low: 28 °F

    Rain then
    Slight Chance
    Rain/Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 32 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. North wind 5 to 9 mph.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 31. Northeast wind around 6 mph.

    High: 31 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow.  Mostly cloudy, with a low around 22. Light north northeast wind.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Tonight
Clear, with a low around 24. Calm wind becoming northwest around 6 mph after midnight.
Friday
Sunny, with a high near 40. North northwest wind around 5 mph becoming calm in the afternoon.
Friday Night
A 50 percent chance of snow, mainly after 3am. Mostly cloudy, with a low around 30. Calm wind becoming southeast 5 to 8 mph after midnight.
Saturday
Snow, possibly mixed with rain and sleet before noon, then rain and snow between noon and 3pm, then rain after 3pm. High near 41. Southeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Saturday Night
Rain before 3am, then a slight chance of rain and snow. Low around 28. South wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Sunday
Mostly cloudy, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 19. North wind 5 to 9 mph.
Monday
Mostly cloudy, with a high near 31. Northeast wind around 6 mph.
Monday Night
A chance of snow. Mostly cloudy, with a low around 22. Light north northeast wind.
Tuesday
Partly sunny, with a high near 33. Northwest wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 20. Light and variable wind.
Wednesday
Mostly sunny, with a high near 39. South wind 3 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 25. South wind around 5 mph becoming light and variable.
Thursday
Mostly cloudy, with a high near 39. Northwest wind 5 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
9:01 pm CST Nov 27, 2025
9pm CST Nov 27, 2025-6pm CST Dec 4, 2025
 
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Additional Resources

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Hourly Weather Forecast

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