Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

77°F

25°C

Humidity 28%
Wind Speed S 10 mph
Barometer 29.98 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Mar 4:45 pm CDT
Extended Forecast for

Bethalto IL

  • Tonight

    Tonight: Increasing clouds, with a low around 49. South wind 5 to 7 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 80. Southwest wind 5 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. Northwest wind around 6 mph becoming calm  after midnight.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. South wind 6 to 9 mph.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 49. South wind 5 to 7 mph.
Friday
Sunny, with a high near 80. Southwest wind 5 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 50. Northwest wind around 6 mph becoming calm after midnight.
Saturday
Sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the morning.
Saturday Night
Clear, with a low around 58. South wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
4:36 pm CDT Mar 19, 2026
5pm CDT Mar 19, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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