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.

Overcast

50°F

10°C

Humidity 67%
Wind Speed N 12 mph
Barometer 30.28 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 11 Apr 12:50 pm CDT
Extended Forecast for

Royal Lakes IL

Frost Advisory April 12, 03:00am until April 12, 08:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 55. North wind around 10 mph.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind around 6 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Widespread frost, mainly between 7am and 8am. Otherwise, sunny, with a high near 61. South wind 3 to 8 mph.

    High: 61 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73. Breezy, with a south wind 15 to 21 mph, with gusts as high as 29 mph.

    High: 73 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 55. North wind around 10 mph.
Tonight
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind around 6 mph becoming calm in the evening.
Saturday
Widespread frost, mainly between 7am and 8am. Otherwise, sunny, with a high near 61. South wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 45. South wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 73. Breezy, with a south wind 15 to 21 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 53.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Sunny, with a high near 60. Breezy.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 69.
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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:
11:52 am CDT Apr 11, 2025
Forecast Valid:
1pm CDT Apr 11, 2025-6pm CDT Apr 17, 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