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.

Fog/Mist

52°F

11°C

Humidity 88%
Wind Speed W 20 mph
Barometer 29.94 in
Dewpoint 48°F (9°C)
Visibility 2.00 mi
Wind Chill46°F (8°C)
Last update 7 Mar 12:45 pm CST
Extended Forecast for

Bethalto IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 63. West wind 14 to 17 mph, with gusts as high as 25 mph.

    High: 63 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 6 to 11 mph becoming light west after midnight.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 65. Southwest wind 5 to 11 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44. South wind around 8 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. South wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then rain likely. High near 66. Breezy. Chance of precipitation is 100%.

    High: 66 °F

    Rain then
    Rain Likely
    and Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 63. West wind 14 to 17 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 6 to 11 mph becoming light west after midnight.
Sunday
Sunny, with a high near 65. Southwest wind 5 to 11 mph.
Sunday Night
Clear, with a low around 44. South wind around 8 mph.
Monday
Sunny, with a high near 77. South wind 7 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 59.
Tuesday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then rain likely. High near 66. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 32.
Thursday
Sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Partly sunny, with a high near 66. Breezy.
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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:
12:25 pm CST Mar 7, 2026
Forecast Valid:
1pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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