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.

Mostly Cloudy

59°F

15°C

Humidity 94%
Wind Speed S 14 mph
Barometer 29.88 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 7 Mar 8:45 am CST
Extended Forecast for

Royal Lakes IL

  • Today

    Today: A 40 percent chance of rain before 10am. Cloudy, with a temperature falling to around 47 by 5pm. Breezy, with a southwest wind 14 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 63 °F⇓

    Chance Rain
    then Mostly
    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 11 mph.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 64. Southwest wind 6 to 11 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44. South wind 8 to 10 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly after midnight. Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 77. Breezy. Chance of precipitation is 80%.

    High: 77 °F

    Chance Rain
    then Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 49. Breezy. Chance of precipitation is 90%.

    Low: 49 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then a chance of rain. High near 61. Breezy. Chance of precipitation is 80%.

    High: 61 °F

    Breezy. Rain
    then Chance
    Rain

Detailed Forecast

Today
A 40 percent chance of rain before 10am. Cloudy, with a temperature falling to around 47 by 5pm. Breezy, with a southwest wind 14 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 11 mph.
Sunday
Sunny, with a high near 64. Southwest wind 6 to 11 mph.
Sunday Night
Clear, with a low around 44. South wind 8 to 10 mph.
Monday
Sunny, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 23 mph.
Monday Night
A 30 percent chance of rain, mainly after midnight. Mostly clear, with a low around 57.
Tuesday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 77. Breezy. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 49. Breezy. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 61. Breezy. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 63. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Royal Lakes IL
 39.1°N 89.98°W (Elev. 659 ft)
Last Update:
8:51 am CST Mar 7, 2026
Forecast Valid:
9am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation