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

55°F

13°C

Humidity 63%
Wind Speed N 16 mph
Barometer 30.13 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 2 May 10:45 am CDT
Extended Forecast for

Royal Lakes IL

  • Today

    Today: Partly sunny, with a high near 58. Northwest wind around 10 mph.

    High: 58 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. South wind 8 to 18 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Southwest wind 8 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    High: 76 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 58. Northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. South wind 8 to 18 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76. Southwest wind 8 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 57.
Wednesday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 41.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Royal Lakes IL
 39.12°N 89.95°W (Elev. 659 ft)
Last Update:
8:11 am CDT May 2, 2026
Forecast Valid:
11am CDT May 2, 2026-6pm CDT May 8, 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