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.

Mostly Cloudy

30°F

-1°C

Humidity 86%
Wind Speed S 10 mph
Barometer 30.11 in
Dewpoint 27°F (-3°C)
Visibility 7.00 mi
Wind Chill21°F (-6°C)
Last update 3 Dec 10:50 am CST
Extended Forecast for

3 Miles N West Alton MO

  • Today

    Today: A 50 percent chance of snow after 3pm. Cloudy, with a high near 34. South wind 3 to 8 mph.

    High: 34 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely before 2am, then a chance of flurries between 2am and 3am. Cloudy, with a low around 11. Light west wind becoming north 8 to 13 mph in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 11 °F

    Snow Likely
    then Slight
    Chance Snow

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 22. North wind 5 to 9 mph becoming light in the afternoon.

    High: 22 °F

    Gradual
    Clearing

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10. Calm wind becoming south around 5 mph after midnight.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 37. South wind 5 to 7 mph.

    High: 37 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow after noon. Mostly cloudy, with a high near 35. Chance of precipitation is 20%.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Today
A 50 percent chance of snow after 3pm. Cloudy, with a high near 34. South wind 3 to 8 mph.
Tonight
Snow likely before 2am, then a chance of flurries between 2am and 3am. Cloudy, with a low around 11. Light west wind becoming north 8 to 13 mph in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 22. North wind 5 to 9 mph becoming light in the afternoon.
Thursday Night
Partly cloudy, with a low around 10. Calm wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 37. South wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 35. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 42.
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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:
10:51 am CST Dec 3, 2025
Forecast Valid:
11am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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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