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

5°F

-15°C

Humidity 74%
Wind Speed SW 6 mph
Barometer 30.44 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 1 Feb 3:35 am CST
Extended Forecast for

Royal Lakes IL

  • Overnight

    Overnight: Mostly clear, with a low around 0. West wind around 6 mph.

    Low: 0 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of snow, mainly after 2pm. Increasing clouds, with a high near 25. Wind chill values as low as -10. Light and variable wind becoming south 6 to 11 mph in the morning.

    High: 25 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 15. South wind 5 to 8 mph becoming west after midnight.

    Low: 15 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34. West wind 5 to 8 mph becoming light and variable in the afternoon.

    High: 34 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. Calm wind becoming east around 5 mph after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 0. West wind around 6 mph.
Sunday
A 40 percent chance of snow, mainly after 2pm. Increasing clouds, with a high near 25. Wind chill values as low as -10. Light and variable wind becoming south 6 to 11 mph in the morning.
Sunday Night
A 40 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 15. South wind 5 to 8 mph becoming west after midnight.
Monday
Partly sunny, with a high near 34. West wind 5 to 8 mph becoming light and variable in the afternoon.
Monday Night
Mostly cloudy, with a low around 22. Calm wind becoming east around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Mostly sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Royal Lakes IL
 39.12°N 89.95°W (Elev. 659 ft)
Last Update:
3:16 am CST Feb 1, 2026
Forecast Valid:
3am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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