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.

Fog/Mist

70°F

21°C

Humidity 99%
Wind Speed Calm
Barometer 29.82 in
Dewpoint 69°F (21°C)
Visibility 5.00 mi
Last update 18 Jun 3:35 am CDT
Extended Forecast for

Royal Lakes IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 7am. Mostly cloudy, with a high near 83. South wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 83 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 64. Southwest wind 7 to 10 mph.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 83. Northwest wind around 9 mph.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Light and variable wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 70. Light south wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 7am. Mostly cloudy, with a high near 83. South wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 64. Southwest wind 7 to 10 mph.
Juneteenth
Mostly sunny, with a high near 83. Northwest wind around 9 mph.
Thursday Night
Mostly clear, with a low around 66. Light and variable wind.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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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:
2:52 am CDT Jun 18, 2025
Forecast Valid:
3am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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