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

54°F

12°C

Humidity 77%
Wind Speed S 14 mph
Barometer 29.87 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 9 Mar 8:50 am CDT
Extended Forecast for

4 Miles NNW Royal Lakes IL

  • Today

    Today: Sunny, with a high near 77. South wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. South wind 9 to 11 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 51. South wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 51 °F

    Showers
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 60 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    High: 60 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. Blustery.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. South wind 13 to 17 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 57. South wind 9 to 11 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 8 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 51. South wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 60 by 10am, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 30. Blustery.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 41. Breezy.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 63.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Royal Lakes IL
 39.17°N 89.98°W (Elev. 587 ft)
Last Update:
8:26 am CDT Mar 9, 2026
Forecast Valid:
9am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation