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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

41°F

5°C

Humidity 82%
Wind Speed N 3 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 14 Mar 2:52 am CDT
Extended Forecast for

3 Miles NNW Royalton IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 41. East northeast wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. East northeast wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. South wind 9 to 16 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Windy, with a south wind 21 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 70%.

    High: 71 °F

    Mostly Cloudy
    and Breezy
    then Showers
    Likely and
    Windy

  • 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 24. Breezy, with a south southwest wind 23 to 25 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%.

    Low: 24 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: Mostly cloudy, with a high near 32. Breezy, with a west northwest wind around 23 mph, with gusts as high as 33 mph.

    High: 32 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 28 mph.

    Low: 14 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 38. West northwest wind around 8 mph.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 28. South wind 5 to 14 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 41. East northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 67. East northeast 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 wind 9 to 16 mph, with gusts as high as 25 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Windy, with a south wind 21 to 30 mph, with gusts as high as 41 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 24. Breezy, with a south southwest wind 23 to 25 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 90%.
Monday
Mostly cloudy, with a high near 32. Breezy, with a west northwest wind around 23 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 14. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 28 mph.
Tuesday
Sunny, with a high near 38. West northwest wind around 8 mph.
Tuesday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 28. South wind 5 to 14 mph, with gusts as high as 23 mph.
Wednesday
Partly sunny, with a high near 60. South southwest wind 14 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly clear, with a low around 40. South wind 5 to 8 mph.
Thursday
Sunny, with a high near 71. Southwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 47. South southwest wind around 6 mph.
Friday
Sunny, with a high near 71. Southwest wind 6 to 10 mph becoming west northwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Royalton IL
 37.92°N 89.13°W
Last Update:
1:26 am CDT Mar 14, 2026
Forecast Valid:
3am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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Chance of Precipitation