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.

Light Rain and Breezy

43°F

6°C

Humidity 81%
Wind Speed NW 23 G 31 mph
Barometer 29.48 in
Dewpoint 37°F (3°C)
Visibility 8.00 mi
Wind Chill34°F (1°C)
Last update 15 Mar 6:50 pm CDT
Extended Forecast for

3 Miles WNW Alton IL

Wind Advisory March 15, 07:25pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 07:25pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 21 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow

  • Monday

    Monday: A chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 27. Blustery, with a northwest wind 22 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 30%.

    High: 27 °F

    Blustery.
    Chance Snow
    then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Northwest wind 13 to 18 mph, with gusts as high as 28 mph.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Tonight
Rain before 9pm, then rain and snow likely between 9pm and 10pm, then snow after 10pm. Low around 21. Breezy, with a west wind around 26 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 27. Blustery, with a northwest wind 22 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 13. Northwest wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Alton IL
 38.93°N 90.19°W (Elev. 591 ft)
Last Update:
6:51 pm CDT Mar 15, 2026
Forecast Valid:
7pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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