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

37°F

3°C

Humidity 74%
Wind Speed NW 5 mph
Barometer 30.29 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Mar 1:15 am CDT
Extended Forecast for

2 Miles NNE Bethalto IL

  • Overnight

    Overnight: Clear, with a low around 30. Northwest wind around 9 mph.

    Low: 30 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 53. West wind 5 to 13 mph becoming southwest in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a south wind 14 to 21 mph, with gusts as high as 37 mph.

    Low: 43 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 59. Breezy, with a west wind 17 to 20 mph, with gusts as high as 31 mph.

    High: 59 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35. Northwest wind 5 to 8 mph becoming east after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 65. Breezy. Chance of precipitation is 80%.

    High: 65 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain and snow likely before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 22. Breezy. Chance of precipitation is 60%.

    Low: 22 °F

    Rain/Snow
    Likely and
    Breezy

Detailed Forecast

Overnight
Clear, with a low around 30. Northwest wind around 9 mph.
Thursday
Sunny, with a high near 53. West wind 5 to 13 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 14 to 21 mph, with gusts as high as 37 mph.
Friday
Partly sunny, with a high near 59. Breezy, with a west wind 17 to 20 mph, with gusts as high as 31 mph.
Friday Night
Mostly cloudy, with a low around 35. Northwest wind 5 to 8 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 65. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 22. Breezy. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 31. Blustery.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 56.
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Forecast Area
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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:
1:26 am CDT Mar 12, 2026
Forecast Valid:
1am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation