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.

Fair

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 8 Mar 4:55 am CDT
Extended Forecast for

2 Miles NNE Bethalto IL

  • Today

    Today: Sunny, with a high near 64. Light southwest wind increasing to 6 to 11 mph in the morning.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 43. South wind around 8 mph.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 76. South wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 80. South wind 8 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 80 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 100%.

    Low: 53 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 1pm, then a chance of rain. High near 66. Breezy. Chance of precipitation is 100%.

    High: 66 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow before 1am. Partly cloudy, with a low around 30. Blustery. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow and
    Blustery

  • Thursday

    Thursday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Light southwest wind increasing to 6 to 11 mph in the morning.
Tonight
Clear, with a low around 43. South wind around 8 mph.
Monday
Sunny, with a high near 76. South wind 7 to 16 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 58. South wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
Rain likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 80. South wind 8 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 100%.
Wednesday
Rain and possibly a thunderstorm before 1pm, then a chance of rain. High near 66. Breezy. Chance of precipitation is 100%.
Wednesday Night
A slight chance of rain and snow before 1am. Partly cloudy, with a low around 30. Blustery. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 65. Breezy.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Bethalto IL
 38.92°N 90.02°W (Elev. 512 ft)
Last Update:
3:21 am CDT Mar 8, 2026
Forecast Valid:
5am CDT Mar 8, 2026-6pm CDT Mar 14, 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