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

45°F

7°C

Humidity 34%
Wind Speed W 16 mph
Barometer 30.05 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 21 Jan 3:45 pm CST
Extended Forecast for

Bethalto IL

Winter Storm Watch January 24, 12:00am until January 25, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Southwest wind 5 to 13 mph becoming northwest after midnight. Winds could gust as high as 24 mph.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37. West wind 3 to 7 mph.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10. Light and variable wind becoming north 12 to 17 mph in the evening. Winds could gust as high as 24 mph.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 14. North wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 14 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Cloudy, with a low around 3. North wind around 11 mph.

    Low: 3 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy and cold, with a high near 14. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 14 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow. Low around 8. Chance of precipitation is 80%.

    Low: 8 °F

    Snow

  • Sunday

    Sunday: A 50 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 19.

    High: 19 °F

    Chance Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Southwest wind 5 to 13 mph becoming northwest after midnight. Winds could gust as high as 24 mph.
Thursday
Partly sunny, with a high near 37. West wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 10. Light and variable wind becoming north 12 to 17 mph in the evening. Winds could gust as high as 24 mph.
Friday
Mostly cloudy and cold, with a high near 14. North wind 13 to 17 mph, with gusts as high as 24 mph.
Friday Night
A 30 percent chance of snow after midnight. Cloudy, with a low around 3. North wind around 11 mph.
Saturday
Snow likely, mainly after noon. Cloudy and cold, with a high near 14. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Snow. Low around 8. Chance of precipitation is 80%.
Sunday
A 50 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 19.
Sunday Night
Partly cloudy, with a low around -2.
Monday
Sunny and cold, with a high near 15.
Monday Night
Mostly clear, with a low around 2.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
3:16 pm CST Jan 21, 2026
Forecast Valid:
3pm CST Jan 21, 2026-6pm CST Jan 28, 2026
 
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