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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

47°F

8°C

Humidity 42%
Wind Speed S 18 G 29 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Mar 12:52 am CDT
Extended Forecast for

3 Miles NW Saint Johns IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 42. South southwest wind 10 to 17 mph, with gusts as high as 24 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 62. Southwest wind 14 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 32 mph.

    High: 62 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming east after midnight.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 66. East wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

    High: 71 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 21 to 23 mph becoming west northwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%.

    Low: 26 °F

    Showers and
    Breezy then
    Rain/Snow and
    Blustery

  • Monday

    Monday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. Breezy, with a west northwest wind 20 to 22 mph, with gusts as high as 33 mph.

    High: 32 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 42. South southwest wind 10 to 17 mph, with gusts as high as 24 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 62. Southwest wind 14 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 32 mph.
Friday Night
Mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 66. East wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 54. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 21 to 23 mph becoming west northwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%.
Monday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. Breezy, with a west northwest wind 20 to 22 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 15. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 37. Northwest wind around 9 mph.
Tuesday Night
Mostly cloudy, with a low around 27. South southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy, with a high near 57. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 40. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 68. South southwest wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Saint Johns IL
 38.06°N 89.27°W
Last Update:
1:26 am CDT Mar 13, 2026
Forecast Valid:
1am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
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Additional Resources

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Chance of Precipitation