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

79°F

26°C

Humidity 65%
Wind Speed S 6 mph
Barometer 30.06 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 12 Jun 10:50 am CDT
Extended Forecast for

West Alton MO

  • Today

    Today: A 20 percent chance of showers after 1pm. Cloudy, with a high near 82. South wind around 8 mph.

    High: 82 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 2am. Cloudy, with a low around 69. Southeast wind around 6 mph.

    Low: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. High near 79. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 69. South wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 84. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers after 1pm. Cloudy, with a high near 82. South wind around 8 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Cloudy, with a low around 69. Southeast wind around 6 mph.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. High near 79. Southeast wind 6 to 9 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 69. South wind 3 to 7 mph. Chance of precipitation is 50%.
Saturday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 84. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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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:
10:52 am CDT Jun 12, 2025
Forecast Valid:
11am CDT Jun 12, 2025-6pm CDT Jun 18, 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