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.

Fair

66°F

19°C

Humidity 73%
Wind Speed NA
Barometer 30.02 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Oct 10:35 pm CDT
Extended Forecast for

4 Miles NNW Royal Lakes IL

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Southeast wind 7 to 9 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81. South wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62. South wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 79. Southwest wind 8 to 14 mph. Chance of precipitation is 90%.

    High: 79 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 47. Southwest wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers. Partly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. Southeast wind 7 to 9 mph.
Friday
Partly sunny, with a high near 81. South wind 9 to 13 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62. South wind 9 to 11 mph, with gusts as high as 20 mph.
Saturday
Showers likely, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 79. Southwest wind 8 to 14 mph. Chance of precipitation is 90%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 47. Southwest wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Sunday
Sunny, with a high near 63.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 71.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 47.
Tuesday
A 20 percent chance of showers before 1pm. Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Royal Lakes IL
 39.17°N 89.98°W (Elev. 587 ft)
Last Update:
10:21 pm CDT Oct 16, 2025
Forecast Valid:
10pm CDT Oct 16, 2025-6pm CDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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