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

70°F

21°C

Humidity 33%
Wind Speed N 18 G 26 mph
Barometer 30.11 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 5 Nov 1:45 pm CST
Extended Forecast for

West Alton MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. North wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 38. North wind around 6 mph becoming light and variable after midnight.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Southeast wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers between midnight and 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 54. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 73. West wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 73 °F

    Slight Chance
    Rain then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 67.

    High: 67 °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 35.

    Low: 35 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 68. North wind 8 to 16 mph, with gusts as high as 23 mph.
Tonight
Clear, with a low around 38. North wind around 6 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 65. Southeast wind 5 to 15 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers between midnight and 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 54. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Friday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 73. West wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 42.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 67.
Saturday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Mostly clear, with a low around 24.
Monday
Sunny, with a high near 44.
Monday Night
Mostly clear, with a low around 27.
Veterans Day
Mostly sunny, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
Last Update:
11:11 am CST Nov 5, 2025
Forecast Valid:
2pm CST Nov 5, 2025-6pm CST Nov 11, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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