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

38°F

3°C

Humidity 91%
Wind Speed NW 3 mph
Barometer 30.09 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 10 Jan 1:15 am CST
Extended Forecast for

Royal Lakes IL

  • Overnight

    Overnight: A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 9am, then a slight chance of snow between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a steady temperature around 40. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    High: 40 °F

    Chance
    Rain/Snow
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 25. Northwest wind 11 to 18 mph, with gusts as high as 29 mph.

    Low: 25 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. Southwest wind 5 to 9 mph.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 36. Light and variable wind.
Saturday
A chance of rain before 9am, then a slight chance of snow between 9am and 10am. Cloudy through mid morning, then gradual clearing, with a steady temperature around 40. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 25. Northwest wind 11 to 18 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 36. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 25. Southwest wind 5 to 9 mph.
Monday
Mostly sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Mostly cloudy, with a high near 41.
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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:
1:06 am CST Jan 10, 2026
Forecast Valid:
1am CST Jan 10, 2026-6pm CST Jan 16, 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