Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

48°F

9°C

Humidity 61%
Wind Speed NW 20 G 28 mph
Barometer 30.42 in (1030.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 27 Mar 2:52 pm CDT
Extended Forecast for

2 Miles WNW Royalton IL

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning
  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 50. North wind around 16 mph, with gusts as high as 24 mph.

    High: 50 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 31. North wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 57. North northeast wind around 6 mph becoming southeast in the afternoon.

    High: 57 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. South southeast wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 69. South wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. South southwest wind 11 to 18 mph, with gusts as high as 26 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. South wind around 16 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 30 mph.

    High: 81 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 50. North wind around 16 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 31. North wind 7 to 14 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 57. North northeast wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 38. South southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 69. South wind 6 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 79. South southwest wind 11 to 18 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 65. South wind around 16 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 81. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 30 mph.
Tuesday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. South southwest wind around 15 mph becoming west after midnight. Winds could gust as high as 24 mph.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 64. Northwest wind 14 to 16 mph becoming north northeast in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 46. East northeast wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 59. East wind 11 to 14 mph, with gusts as high as 21 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Royalton IL
 37.9°N 89.14°W
2:06 pm CDT Mar 27, 2026
3pm CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database