Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

71°F

22°C

Humidity 79%
Wind Speed NW 3 mph
Barometer 30.03 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 22 Aug 10:35 pm CDT
Extended Forecast for

West Alton MO

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 64. Light northwest wind.

    Low: 64 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Sunny, with a high near 84. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. North wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. Calm wind becoming east around 6 mph in the morning.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 65. East wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. Light northwest wind.
Sunday
Sunny, with a high near 84. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 84. Calm wind becoming east around 6 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 68.
Saturday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
5:56 pm CDT Aug 22, 2026
10pm CDT Aug 22, 2026-6pm CDT Aug 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database