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.

Fair

N/A

Humidity NA
Wind Speed SE 3 mph
Barometer 29.91 in
Dewpoint N/A
Visibility 10.00 mi
Last update 16 Jun 11:35 pm CDT
Extended Forecast for

West Alton MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 8pm and midnight. Increasing clouds, with a low around 73. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 10am. Mostly cloudy, with a high near 86. Southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 86 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. West wind 6 to 13 mph.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 70. Calm wind.
Tuesday
Mostly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms between 8pm and midnight. Increasing clouds, with a low around 73. South wind around 7 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, then showers and thunderstorms likely after 10am. Mostly cloudy, with a high near 86. Southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. West wind 6 to 13 mph.
Juneteenth
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 76.
Monday
A 20 percent chance of showers. Sunny, with a high near 94.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Alton MO
 38.84°N 90.22°W (Elev. 407 ft)
Last Update:
10:21 pm CDT Jun 16, 2025
Forecast Valid:
11pm CDT Jun 16, 2025-6pm CDT Jun 23, 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