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

61°F

16°C

Humidity 45%
Wind Speed N 9 mph
Barometer 30.19 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 5 Nov 4:50 pm CST
Extended Forecast for

3 Miles SSW Piasa IL

  • Tonight

    Tonight: Clear, with a low around 37. North wind 5 to 8 mph becoming light and variable.

    Low: 37 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 62. East wind 6 to 16 mph becoming south in the afternoon. Winds could gust as high as 25 mph.

    High: 62 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight. Increasing clouds, with a low around 52. Southeast wind 11 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 71. West wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. Northwest wind 3 to 7 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Partly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 37. North wind 5 to 8 mph becoming light and variable.
Thursday
Sunny, with a high near 62. East wind 6 to 16 mph becoming south in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A 30 percent chance of showers after midnight. Increasing clouds, with a low around 52. Southeast wind 11 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 71. West wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 42. Northwest wind 3 to 7 mph.
Saturday
A 20 percent chance of rain after noon. Partly sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Mostly clear, with a low around 22.
Monday
Sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 26.
Veterans Day
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Piasa IL
 39.08°N 90.15°W (Elev. 610 ft)
Last Update:
5:06 pm CST Nov 5, 2025
Forecast Valid:
5pm CST Nov 5, 2025-6pm CST Nov 12, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation