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

17°F

-8°C

Humidity 54%
Wind Speed W 22 G 32 mph
Barometer 30.13 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 29 Dec 4:15 am CST
Extended Forecast for

2 Miles WSW Alton IL

Wind Advisory until December 29, 06:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 29, 06:00am

    NOW until 6:00am Mon

    Wind Advisory

  • Overnight

    Low: 17 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: Partly sunny, with a high near 29. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 36 mph.

    High: 29 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. Northwest wind 8 to 15 mph, with gusts as high as 22 mph.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 36. West wind 6 to 10 mph.

    High: 36 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. West wind around 8 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 17. Breezy, with a west wind around 26 mph, with gusts as high as 37 mph.
Monday
Partly sunny, with a high near 29. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 19. Northwest wind 8 to 15 mph, with gusts as high as 22 mph.
Tuesday
Increasing clouds, with a high near 36. West wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 27. West wind around 8 mph.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 24.
New Year's Day
Mostly sunny, with a high near 35.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly cloudy, with a high near 39.
Friday Night
Mostly cloudy, with a low around 24.
Saturday
Sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
4:06 am CST Dec 29, 2025
Forecast Valid:
4am CST Dec 29, 2025-6pm CST Jan 4, 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