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

61°F

16°C

Humidity 94%
Wind Speed W 7 mph
Barometer 29.74 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Mar 9:50 am CDT
Extended Forecast for

Bethalto IL

  • Today

    Today: A 50 percent chance of showers, mainly before 3pm. Cloudy, with a temperature falling to around 44 by 4pm. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 31 mph.

    High: 61 °F⇓

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Blustery, with a northwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 54. Light west wind becoming southwest 6 to 11 mph in the morning.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a south wind 11 to 20 mph, with gusts as high as 31 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 60. West wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 60 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 64. Breezy. Chance of precipitation is 80%.

    High: 64 °F

    Rain and
    Breezy

Detailed Forecast

Today
A 50 percent chance of showers, mainly before 3pm. Cloudy, with a temperature falling to around 44 by 4pm. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Blustery, with a northwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 54. Light west wind becoming southwest 6 to 11 mph in the morning.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 11 to 20 mph, with gusts as high as 31 mph.
Friday
Partly sunny, with a high near 60. West wind 13 to 17 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 52.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 64. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 24. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 37. Breezy.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 42.
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:
7:41 am CDT Mar 11, 2026
Forecast Valid:
10am CDT Mar 11, 2026-6pm CDT Mar 17, 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