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

63°F

17°C

Humidity 32%
Wind Speed S 12 mph
Barometer 30.08 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 6 Nov 12:45 pm CST
Extended Forecast for

West Alton MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 66. Southeast wind 14 to 16 mph, with gusts as high as 24 mph.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between 1am and 4am. Increasing clouds, with a low around 53. Southeast wind 10 to 13 mph becoming southwest after midnight. Chance of precipitation is 20%.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 72. West wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43. West wind 5 to 8 mph becoming calm after midnight.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain after noon. Partly sunny, with a high near 67. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 67 °F

    Partly Sunny
    then 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. Breezy.

    High: 42 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 66. Southeast wind 14 to 16 mph, with gusts as high as 24 mph.
Tonight
A slight chance of rain between 1am and 4am. Increasing clouds, with a low around 53. Southeast wind 10 to 13 mph becoming southwest after midnight. Chance of precipitation is 20%.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. West wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 43. West wind 5 to 8 mph becoming calm after midnight.
Saturday
A 30 percent chance of rain after noon. Partly sunny, with a high near 67. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
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. Breezy.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 44.
Monday Night
Mostly clear, with a low around 27.
Veterans Day
Mostly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
Last Update:
11:36 am CST Nov 6, 2025
Forecast Valid:
1pm CST Nov 6, 2025-6pm CST Nov 12, 2025
 
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