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 and Breezy

36°F

2°C

Humidity 87%
Wind Speed W 21 G 37 mph
Barometer 29.58 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 15 Mar 9:50 pm CDT
Extended Forecast for

3 Miles SSW Piasa IL

Wind Advisory March 15, 10:10pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 10:10pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 20 °F

    Snow and
    Breezy then
    Chance Snow
    and Blustery

  • Monday

    Monday: A chance of snow before noon, then scattered flurries between noon and 2pm. Cloudy, with a high near 26. Blustery, with a northwest wind 24 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.

    High: 26 °F

    Blustery.
    Chance Snow
    then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 29 mph.

    Low: 11 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33. Northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 33 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 27. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Tonight
Snow, mainly before midnight. Low around 20. Blustery, with a west wind 25 to 28 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
Monday
A chance of snow before noon, then scattered flurries between noon and 2pm. Cloudy, with a high near 26. Blustery, with a northwest wind 24 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 11. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 33. Northwest wind 6 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 27. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 42.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 71.
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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:
7:30 pm CDT Mar 15, 2026
Forecast Valid:
10pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation