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

23°F

-5°C

Humidity 72%
Wind Speed N 8 mph
Barometer 30.32 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 4 Dec 2:55 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • Overnight

    Overnight: Cloudy, with a low around 12. North wind around 8 mph.

    Low: 12 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 23. North wind 5 to 9 mph.

    High: 23 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10. Northeast wind around 5 mph becoming calm in the evening.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 38. Calm wind becoming south 5 to 7 mph in the morning.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. South wind around 6 mph becoming light and variable after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 12. North wind around 8 mph.
Thursday
Partly sunny, with a high near 23. North wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 10. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 38. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Mostly cloudy, with a low around 25. South wind around 6 mph becoming light and variable after midnight.
Saturday
Partly sunny, with a high near 37.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 45.
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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:
2:46 am CST Dec 4, 2025
Forecast Valid:
3am CST Dec 4, 2025-6pm CST Dec 10, 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