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 83%
Wind Speed Calm
Barometer 30.12 in (1019.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 10 Nov 2:52 am CST
Extended Forecast for

2 Miles NNW Royalton IL

  • Overnight

    Overnight: Clear, with a low around 43. Light west southwest wind.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Calm wind becoming west around 5 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 21 mph.

    High: 73 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Northwest wind around 11 mph.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53. North northwest wind 11 to 17 mph, with gusts as high as 23 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. North northwest wind 6 to 11 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 48. North northwest wind 7 to 14 mph, with gusts as high as 18 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 43. Light west southwest wind.
Tuesday
Sunny, with a high near 73. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 45. Calm wind.
Veterans Day
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 42. Northwest wind around 11 mph.
Thursday
Mostly sunny, with a high near 53. North northwest wind 11 to 17 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 30. North northwest wind 6 to 11 mph.
Friday
Sunny, with a high near 48. North northwest wind 7 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 51. Calm wind.
Saturday Night
Mostly clear, with a low around 30. Calm wind.
Sunday
Mostly sunny, with a high near 54. Calm wind becoming south southeast 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 34. Light east southeast wind.
Monday
Mostly sunny, with a high near 58. Calm wind becoming east southeast 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Royalton IL
 37.92°N 89.13°W
Last Update:
12:35 am CST Nov 10, 2026
Forecast Valid:
3am CST Nov 10, 2026-6pm CST Nov 16, 2026
 
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Additional Resources

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