National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

20°F

-7°C

Humidity 56%
Wind Speed NW 12 G 17 mph
Barometer 30.17 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 17 Mar 3:15 am CDT
Extended Forecast for

2 Miles NNE Bethalto IL

  • Overnight

    Overnight: Partly cloudy, with a low around 12. Northwest wind around 10 mph, with gusts as high as 24 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 32. Northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 4am, then a chance of rain. Cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 29 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 61. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 61 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. Northwest wind around 10 mph, with gusts as high as 24 mph.
Tuesday
Increasing clouds, with a high near 32. Northwest wind 6 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow before 4am, then a chance of rain. Cloudy, with a low around 29. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 61. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Bethalto IL
 38.92°N 90.02°W (Elev. 512 ft)
Last Update:
3:31 am CDT Mar 17, 2026
Forecast Valid:
3am CDT Mar 17, 2026-6pm CDT Mar 23, 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