National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

46°F

8°C

Humidity 63%
Wind Speed NW 17 G 31 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 6 Feb 11:52 am CST
Extended Forecast for

3 Miles NW Royalton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a temperature falling to around 43 by 5pm. North northwest wind 13 to 17 mph, with gusts as high as 30 mph.

    High: 49 °F⇓

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 22. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 22 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35. Northeast wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 24. Southeast wind 3 to 6 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 49. South southwest wind 6 to 9 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. South wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Calm wind becoming southwest around 5 mph.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers, mainly after noon. Mostly cloudy, with a high near 65. Southwest wind 6 to 10 mph.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a temperature falling to around 43 by 5pm. North northwest wind 13 to 17 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 22. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 35. Northeast wind 5 to 7 mph becoming light and variable in the afternoon.
Saturday Night
Increasing clouds, with a low around 24. Southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 49. South southwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 31. South wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 59. Calm wind becoming southwest around 5 mph.
Monday Night
Partly cloudy, with a low around 41. South wind 3 to 6 mph.
Tuesday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 65. Southwest wind 6 to 10 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 40. Southwest wind around 8 mph becoming northwest after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 53. North northwest wind 7 to 10 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 32. North wind around 6 mph.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 46. North wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Royalton IL
 37.92°N 89.16°W
Last Update:
10:46 am CST Feb 6, 2026
Forecast Valid:
12pm CST Feb 6, 2026-6pm CST Feb 12, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation