National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

44°F

7°C

Humidity 64%
Wind Speed W 5 mph
Barometer 30.21 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 18 Apr 11:55 pm CDT
Extended Forecast for

3 Miles NE Royal Lakes IL

  • Overnight

    Overnight: Areas of frost after 5am. Otherwise, clear, with a low around 36. Southwest wind 3 to 5 mph.

    Low: 36 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 63. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 63 °F

    Areas Frost
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. North wind 5 to 10 mph becoming northeast after midnight.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Southeast wind 8 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 55.

    Low: 55 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of frost after 5am. Otherwise, clear, with a low around 36. Southwest wind 3 to 5 mph.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 63. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Sunday Night
Mostly clear, with a low around 36. North wind 5 to 10 mph becoming northeast after midnight.
Monday
Sunny, with a high near 64. Light and variable wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 47. Southeast wind 8 to 10 mph.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 55.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 46.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Royal Lakes IL
 39.14°N 89.92°W (Elev. 640 ft)
Last Update:
10:46 pm CDT Apr 18, 2026
Forecast Valid:
12am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation