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

79°F

26°C

Humidity 89%
Wind Speed N 3 mph
Barometer 30.01 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 30 Jul 8:50 pm CDT
Extended Forecast for

Bethalto IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northwest wind 3 to 6 mph.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Cloudy, with a high near 78. North wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 63. Northeast wind 9 to 13 mph.

    Low: 63 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78. Northeast wind 9 to 14 mph.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. Northeast wind 6 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northwest wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms. Cloudy, with a high near 78. North wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 63. Northeast wind 9 to 13 mph.
Friday
Mostly sunny, with a high near 78. Northeast wind 9 to 14 mph.
Friday Night
Partly cloudy, with a low around 59. Northeast wind 6 to 10 mph.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 63.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.05°W (Elev. 525 ft)
Last Update:
8:16 pm CDT Jul 30, 2025
Forecast Valid:
9pm CDT Jul 30, 2025-6pm CDT Aug 6, 2025
 
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