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

6°F

-14°C

Humidity 81%
Wind Speed Calm
Barometer 30.39 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 28 Jan 1:55 am CST
Extended Forecast for

2 Miles NNE Bethalto IL

  • Overnight

    Overnight: Partly cloudy, with a low around -2. Wind chill values as low as -10. West wind 3 to 5 mph.

    Low: -2 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. Wind chill values as low as -10. Light west wind increasing to 5 to 10 mph in the morning.

    High: 27 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 8. Southwest wind around 5 mph becoming calm after midnight.

    Low: 8 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy and cold, with a high near 20. Northeast wind 3 to 6 mph.

    High: 20 °F

    Cold

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 3. North wind 3 to 6 mph.

    Low: 3 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 15.

    High: 15 °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: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around -2. Wind chill values as low as -10. West wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 27. Wind chill values as low as -10. Light west wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 8. Southwest wind around 5 mph becoming calm after midnight.
Thursday
Mostly cloudy and cold, with a high near 20. Northeast wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 3. North wind 3 to 6 mph.
Friday
Mostly sunny and cold, with a high near 15.
Friday Night
Partly cloudy, with a low around 0.
Saturday
Mostly sunny and cold, with a high near 17.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 25.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 14.
Monday
Partly sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 32.
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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:
2:11 am CST Jan 28, 2026
Forecast Valid:
2am 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