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

73°F

23°C

Humidity 69%
Wind Speed SE 7 mph
Barometer 30.11 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 24 Jul 2:45 pm CDT
Extended Forecast for

2 Miles E Bethalto IL

Heat Advisory July 26, 11:00am until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Scattered showers. Cloudy, with a high near 78. South wind around 5 mph. Chance of precipitation is 50%.

    High: 78 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms before 10pm, then scattered showers between 10pm and 1am, then scattered showers and thunderstorms after 1am. Cloudy, with a low around 67. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 67 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers and thunderstorms before noon, then isolated showers between noon and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 85. South wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 85 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. Light southeast wind.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers. Cloudy, with a high near 78. South wind around 5 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms before 10pm, then scattered showers between 10pm and 1am, then scattered showers and thunderstorms after 1am. Cloudy, with a low around 67. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.
Saturday
Scattered showers and thunderstorms before noon, then isolated showers between noon and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 85. South wind 3 to 6 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 70. Light southeast wind.
Sunday
Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 71.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Bethalto IL
 38.9°N 90.02°W (Elev. 502 ft)
Last Update:
2:31 pm CDT Jul 24, 2026
Forecast Valid:
3pm CDT Jul 24, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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