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

23°F

-5°C

Humidity 66%
Wind Speed S 8 mph
Barometer 30.18 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 24 Feb 3:35 am CST
Extended Forecast for

Bethalto IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 20. South wind 6 to 9 mph.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 54. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 54 °F

    Increasing
    Clouds and
    Breezy

  • Tuesday Night

    Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 33. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 52. Light and variable wind becoming north around 6 mph in the morning.

    High: 52 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. East wind 6 to 9 mph. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 49.

    High: 49 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 20. South wind 6 to 9 mph.
Tuesday
Increasing clouds, with a high near 54. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.
Tuesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 33. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 52. Light and variable wind becoming north around 6 mph in the morning.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. East wind 6 to 9 mph. Chance of precipitation is 60%.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 31.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Monday
A chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
12:26 am CST Feb 24, 2026
Forecast Valid:
3am CST Feb 24, 2026-6pm CST Mar 2, 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