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.

Overcast

37°F

3°C

Humidity 87%
Wind Speed W 16 G 26 mph
Barometer 29.55 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 15 Mar 8:50 pm CDT
Extended Forecast for

Bethalto IL

Wind Advisory March 15, 09:33pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 09:33pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 22 °F

    Breezy.
    Rain/Snow
    Likely then
    Chance Snow

  • Monday

    Monday: A slight chance of snow before 1pm, then scattered flurries between 1pm and 2pm. Cloudy, with a high near 27. Breezy, with a northwest wind 24 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.

    High: 27 °F

    Slight Chance
    Snow and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 28 mph.

    Low: 13 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 29 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Tonight
Rain likely before 10pm, then rain and snow likely between 10pm and 11pm, then a chance of snow after 11pm. Cloudy, with a low around 22. Breezy, with a west wind around 26 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A slight chance of snow before 1pm, then scattered flurries between 1pm and 2pm. Cloudy, with a high near 27. Breezy, with a northwest wind 24 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 13. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 72.
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:
7:30 pm CDT Mar 15, 2026
Forecast Valid:
9pm CDT Mar 15, 2026-6pm CDT Mar 22, 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