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

64°F

18°C

Humidity 60%
Wind Speed SW 7 mph
Barometer 30.18 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 10 Apr 7:45 am CDT
Extended Forecast for

Bethalto IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Cloudy, with a high near 69. Southwest wind 7 to 11 mph becoming north in the afternoon.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers, with thunderstorms also possible after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 50. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 71. Southeast wind 8 to 10 mph.

    High: 71 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 60. Southeast wind around 10 mph.

    Low: 60 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Cloudy, with a high near 69. Southwest wind 7 to 11 mph becoming north in the afternoon.
Tonight
A slight chance of showers, with thunderstorms also possible after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 50. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 20%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 71. Southeast wind 8 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 60. Southeast wind around 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 67.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
5:56 am CDT Apr 10, 2026
Forecast Valid:
7am CDT Apr 10, 2026-6pm CDT Apr 16, 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