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

63°F

17°C

Humidity 45%
Wind Speed W 20 G 26 mph
Barometer 29.44 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Feb 7:50 pm CST
Extended Forecast for

Bethalto IL

  • Tonight

    Tonight: Mostly clear, with a low around 32. Breezy, with a light and variable wind becoming west 16 to 21 mph in the evening. Winds could gust as high as 38 mph.

    Low: 32 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Friday

    Friday: Sunny, with a high near 47. West wind 10 to 18 mph, with gusts as high as 36 mph.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 28. Northwest wind 5 to 7 mph.

    Low: 28 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Northwest wind 5 to 13 mph.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 35. Breezy.

    High: 35 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 32. Breezy, with a light and variable wind becoming west 16 to 21 mph in the evening. Winds could gust as high as 38 mph.
Friday
Sunny, with a high near 47. West wind 10 to 18 mph, with gusts as high as 36 mph.
Friday Night
Increasing clouds, with a low around 28. Northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 44. Northwest wind 5 to 13 mph.
Saturday Night
Mostly clear, with a low around 23. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 35. Breezy.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 55.
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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:
5:01 pm CST Feb 19, 2026
Forecast Valid:
7pm CST Feb 19, 2026-6pm CST Feb 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation