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 70%
Wind Speed SW 8 mph
Barometer 29.88 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 13 Jan 7:50 am CST
Extended Forecast for

Bethalto IL

  • Today

    Today: Increasing clouds, with a high near 60. West wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 60 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 38 °F⇓

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 16. Northwest wind 8 to 15 mph, with gusts as high as 23 mph.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a temperature rising to around 32 by 2am.

    Low: 26 °F⇑

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 60. West wind 9 to 15 mph, with gusts as high as 26 mph.
Tonight
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 16. Northwest wind 8 to 15 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 31. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a temperature rising to around 32 by 2am.
Friday
Partly sunny, with a high near 43. Breezy.
Friday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Mostly sunny, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.9°N 90.05°W (Elev. 512 ft)
Last Update:
5:21 am CST Jan 13, 2026
Forecast Valid:
8am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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