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.

Overcast

46°F

8°C

Humidity 87%
Wind Speed W 15 mph
Barometer 29.98 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 7 Mar 2:50 pm CST
Extended Forecast for

2 Miles NNE Bethalto IL

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Northwest wind 6 to 11 mph becoming light west after midnight.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 65. Light southwest wind increasing to 6 to 11 mph in the morning.

    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 58. South wind 7 to 10 mph.

    Low: 58 °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: Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Wednesday

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

    High: 66 °F

    Showers then
    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 31.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Northwest wind 6 to 11 mph becoming light west after midnight.
Sunday
Sunny, with a high near 65. Light southwest wind increasing to 6 to 11 mph in the morning.
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 58. South wind 7 to 10 mph.
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
Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before noon, then showers likely. High near 66. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 31.
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.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Mostly cloudy, with a high near 55.
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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:
2:11 pm CST Mar 7, 2026
Forecast Valid:
3pm CST Mar 7, 2026-6pm CDT Mar 14, 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