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.

Fog/Mist

19°F

-7°C

Humidity 93%
Wind Speed SE 3 mph
Barometer 30.09 in
Dewpoint 18°F (-8°C)
Visibility 3.00 mi
Last update 3 Dec 7:50 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: A slight chance of rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Mostly cloudy, with a high near 36. South wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tonight

    Tonight: Snow likely before 2am, then a chance of flurries between 2am and 3am. Cloudy, with a low around 11. North wind 6 to 13 mph, with gusts as high as 20 mph. 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: Sunny, with a high near 23. North wind 5 to 8 mph becoming light and variable in the afternoon.

    High: 23 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10. Light and variable wind.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 37. South wind 3 to 6 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 20 percent chance of rain after noon. Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Today
A slight chance of rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Mostly cloudy, with a high near 36. South wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%.
Tonight
Snow likely before 2am, then a chance of flurries between 2am and 3am. Cloudy, with a low around 11. North wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Sunny, with a high near 23. North wind 5 to 8 mph becoming light and variable in the afternoon.
Thursday Night
Partly cloudy, with a low around 10. Light and variable wind.
Friday
Mostly sunny, with a high near 37. South wind 3 to 6 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 20 percent chance of rain after noon. Mostly cloudy, with a high near 35.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
6:26 am CST Dec 3, 2025
Forecast Valid:
8am 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation