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

37°F

3°C

Humidity 60%
Wind Speed NE 9 mph
Barometer 30.42 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 1 Mar 10:45 am CST
Extended Forecast for

Bethalto IL

Winter Weather Advisory March 1, 06:00pm until March 2, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Increasing clouds, with a high near 46. Northeast wind 11 to 13 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Rain, snow, and sleet before 3am, then a chance of rain and snow between 3am and 5am. Low around 34. East wind around 10 mph. Chance of precipitation is 100%. New snow and sleet accumulation of less than a half inch possible.

    Low: 34 °F

    Wintry Mix

  • Monday

    Monday: A 40 percent chance of rain, mainly before 8am. Cloudy, with a high near 45. East wind 7 to 10 mph.

    High: 45 °F

    Chance Rain
    then Cloudy

  • Monday Night

    Monday Night: Rain likely between midnight and 3am, then showers after 3am. Low around 39. East wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 39 °F

    Cloudy then
    Showers

  • Tuesday

    Tuesday: Showers. High near 63. South wind 8 to 11 mph. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 55. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 67. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 46. Northeast wind 11 to 13 mph.
Tonight
Rain, snow, and sleet before 3am, then a chance of rain and snow between 3am and 5am. Low around 34. East wind around 10 mph. Chance of precipitation is 100%. New snow and sleet accumulation of less than a half inch possible.
Monday
A 40 percent chance of rain, mainly before 8am. Cloudy, with a high near 45. East wind 7 to 10 mph.
Monday Night
Rain likely between midnight and 3am, then showers after 3am. Low around 39. East wind 5 to 7 mph. Chance of precipitation is 80%.
Tuesday
Showers. High near 63. South wind 8 to 11 mph. Chance of precipitation is 80%.
Tuesday Night
Showers likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 55. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 67. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Saturday
Showers likely. Cloudy, with a high near 63. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
10:56 am CST Mar 1, 2026
Forecast Valid:
11am CST Mar 1, 2026-6pm CST Mar 7, 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