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.

Mostly Cloudy

27°F

-3°C

Humidity 46%
Wind Speed W 14 mph
Barometer 30.31 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 28 Jan 12:50 pm CST
Extended Forecast for

2 Miles NNE Bethalto IL

  • This Afternoon

    This Afternoon: Cloudy early, then becoming mostly sunny, with a high near 27. West wind 7 to 10 mph.

    High: 27 °F

    Mostly Sunny

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 9. West wind around 6 mph becoming light and variable.

    Low: 9 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Cloudy, with a high near 21. Northeast wind 5 to 7 mph.

    High: 21 °F

    Cloudy then
    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6. North wind 3 to 7 mph.

    Low: 6 °F

    Chance Snow

  • Friday

    Friday: Partly sunny and cold, with a high near 17. North wind 6 to 10 mph.

    High: 17 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 17.

    High: 17 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Cloudy early, then becoming mostly sunny, with a high near 27. West wind 7 to 10 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 9. West wind around 6 mph becoming light and variable.
Thursday
A 20 percent chance of snow after noon. Cloudy, with a high near 21. Northeast wind 5 to 7 mph.
Thursday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6. North wind 3 to 7 mph.
Friday
Partly sunny and cold, with a high near 17. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 0.
Saturday
Mostly sunny and cold, with a high near 17.
Saturday Night
Mostly clear, with a low around 1.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 25.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Monday
Partly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Bethalto IL
 38.92°N 90.02°W (Elev. 512 ft)
Last Update:
11:02 am CST Jan 28, 2026
Forecast Valid:
1pm CST Jan 28, 2026-6pm CST Feb 3, 2026
 
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