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 95%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 22 Aug 3:15 am CDT
Extended Forecast for

3 Miles N West Alton MO

  • Overnight

    Overnight: Clear, with a low around 64. Calm wind.

    Low: 64 °F

    Clear

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Light north wind.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 87. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. North wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 64. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Light north wind.
Saturday
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 87. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 59. North wind around 6 mph.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 58.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N West Alton MO
 38.91°N 90.22°W (Elev. 407 ft)
Last Update:
2:41 am CDT Aug 22, 2025
Forecast Valid:
3am CDT Aug 22, 2025-6pm CDT Aug 28, 2025
 
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Additional Resources

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