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.

Partly Cloudy

79°F

26°C

Humidity 70%
Wind Speed W 9 mph
Barometer 29.91 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Oct 5:50 pm CDT
Extended Forecast for

2 Miles NNE Bethalto IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Mostly sunny, with a high near 80. West wind around 8 mph. Chance of precipitation is 20%.

    High: 80 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then isolated showers between 1am and 3am. Increasing clouds, with a low around 47. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely then
    Scattered
    Showers

  • Friday

    Friday: Isolated showers after 4pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 55 °F

    Breezy.
    Partly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. North wind 8 to 17 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny, with a high near 80. West wind around 8 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely before 1am, then isolated showers between 1am and 3am. Increasing clouds, with a low around 47. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%.
Friday
Isolated showers after 4pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. North wind 8 to 17 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 81.
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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:
5:41 pm CDT Oct 15, 2026
Forecast Valid:
5pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation