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.

Rain

50°F

10°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 30.06 in
Dewpoint 50°F (10°C)
Visibility 2.00 mi
Last update 4 Mar 11:50 am CST
Extended Forecast for

Bethalto IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms, mainly before 4pm. High near 60. Light and variable wind becoming north around 5 mph. Chance of precipitation is 80%.

    High: 60 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Patchy fog after 10pm. Low around 53. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%.

    Low: 53 °F

    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 9am, then isolated showers between 9am and 10am. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 66. Southwest wind 3 to 8 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely and
    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 56. Calm wind becoming south 5 to 9 mph in the evening. Chance of precipitation is 60%.

    Low: 56 °F

    Scattered
    Showers then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 78. South wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 78 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Chance
    T-storms then
    Rain

  • Saturday

    Saturday: A 50 percent chance of rain before noon. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly before 4pm. High near 60. Light and variable wind becoming north around 5 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Patchy fog after 10pm. Low around 53. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm before 9am, then isolated showers between 9am and 10am. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 66. Southwest wind 3 to 8 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 56. Calm wind becoming south 5 to 9 mph in the evening. Chance of precipitation is 60%.
Friday
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 78. South wind 10 to 18 mph, with gusts as high as 29 mph.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. Chance of precipitation is 90%.
Saturday
A 50 percent chance of rain before noon. Mostly cloudy, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 76.
Monday Night
A 40 percent chance of rain and thunderstorms. Partly cloudy, with a low around 60.
Tuesday
Rain and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.
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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:
12:26 pm CST Mar 4, 2026
Forecast Valid:
12pm CST Mar 4, 2026-6pm CDT Mar 10, 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