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

65°F

18°C

Humidity 44%
Wind Speed NW 5 mph
Barometer 29.99 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 13 May 3:55 am CDT
Extended Forecast for

3 Miles ESE West Alton MO

  • Today

    Today: Sunny, with a high near 74. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 48. North wind 5 to 10 mph becoming light in the evening.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Calm wind becoming southeast 5 to 9 mph in the afternoon.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 57. Southeast wind 8 to 10 mph.

    Low: 57 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. South wind 11 to 14 mph.

    High: 84 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 74. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 48. North wind 5 to 10 mph becoming light in the evening.
Thursday
Sunny, with a high near 75. Calm wind becoming southeast 5 to 9 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 57. Southeast wind 8 to 10 mph.
Friday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. South wind 11 to 14 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 70.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 70%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE West Alton MO
 38.86°N 90.19°W (Elev. 420 ft)
Last Update:
2:01 am CDT May 13, 2026
Forecast Valid:
4am CDT May 13, 2026-6pm CDT May 19, 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