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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

70°F

21°C

Humidity 83%
Wind Speed S 15 mph
Barometer 29.87 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 10 Mar 9:50 am CDT
Extended Forecast for

Royal Lakes IL

  • Today

    Today: Sunny, with a high near 81. Breezy, with a south wind 11 to 20 mph, with gusts as high as 28 mph.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 51. Southwest wind 15 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Slight Chance
    T-storms then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 47 by 5pm. Breezy, with a southwest wind 14 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    High: 62 °F⇓

    Breezy.
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 31. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph.

    Low: 31 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53. Northwest wind 5 to 13 mph becoming southwest in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. Breezy.

    Low: 43 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Breezy, with a south wind 11 to 20 mph, with gusts as high as 28 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 51. Southwest wind 15 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 47 by 5pm. Breezy, with a southwest wind 14 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 31. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 53. Northwest wind 5 to 13 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 43. Breezy.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain after 1am. Partly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 59. Breezy. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Royal Lakes IL
 39.1°N 89.98°W (Elev. 659 ft)
Last Update:
5:31 am CDT Mar 10, 2026
Forecast Valid:
9am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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