Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

75°F

24°C

Humidity 61%
Wind Speed SE 6 mph
Barometer 30.14 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 8 Sep 9:50 am CDT
Extended Forecast for

Bethalto IL

  • Today

    Today: Mostly sunny, with a high near 93. South wind around 6 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. South wind 3 to 7 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 96. Heat index values as high as 103. South wind 7 to 9 mph becoming west in the morning.  Chance of precipitation is 30%.

    High: 96 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall.  Low around 69. North wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 100%.

    Low: 69 °F

    T-storms
    Likely then
    Heavy Rain

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm.  High near 81. North wind 3 to 7 mph.  Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 93. South wind around 6 mph.
Tonight
Mostly clear, with a low around 72. South wind 3 to 7 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 96. Heat index values as high as 103. South wind 7 to 9 mph becoming west in the morning. Chance of precipitation is 30%.
Wednesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Low around 69. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%.
Thursday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. High near 81. North wind 3 to 7 mph. Chance of precipitation is 80%.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 66.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 88.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.9°N 90.05°W (Elev. 512 ft)
7:46 am CDT Sep 8, 2026
10am CDT Sep 8, 2026-6pm CDT Sep 14, 2026
 
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Additional Resources

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