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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

73°F

23°C

Humidity 83%
Wind Speed W 3 mph
Barometer 29.91 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 15 Oct 6:50 pm CDT
Extended Forecast for

6 Miles N Royal Lakes IL

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then isolated showers between midnight and 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 45. Southwest wind 9 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely then
    Isolated
    Showers

  • Friday

    Friday: Isolated showers after 4pm. Increasing clouds, with a high near 54. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 54 °F

    Partly Sunny
    and Breezy
    then Isolated
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 34. North wind 6 to 16 mph, with gusts as high as 28 mph.

    Low: 34 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 59. Light northeast wind.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely before midnight, then isolated showers between midnight and 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 45. Southwest wind 9 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%.
Friday
Isolated showers after 4pm. Increasing clouds, with a high near 54. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 34. North wind 6 to 16 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 59. Light northeast wind.
Saturday Night
Clear, with a low around 33. Calm wind.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Royal Lakes IL
 39.19°N 89.95°W (Elev. 584 ft)
Last Update:
5:41 pm CDT Oct 15, 2026
Forecast Valid:
7pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation