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.

Partly Cloudy

62°F

17°C

Humidity 73%
Wind Speed Calm
Barometer 29.76 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 16 Jun 11:35 pm CDT
Extended Forecast for

West Alton MO

Wind Advisory June 17, 01:00pm until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Light and variable wind.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Breezy, with a south wind 8 to 18 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 43 mph.

    High: 93 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 11pm. Low around 69. Breezy, with a west wind 17 to 22 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 1pm and 2pm, then a slight chance of showers after 2pm. Mostly sunny, with a high near 81. Northwest wind 7 to 9 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Light and variable wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Breezy, with a south wind 8 to 18 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 43 mph.
Wednesday Night
Showers and thunderstorms, mainly before 11pm. Low around 69. Breezy, with a west wind 17 to 22 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%.
Thursday
A slight chance of showers and thunderstorms between 1pm and 2pm, then a slight chance of showers after 2pm. Mostly sunny, with a high near 81. Northwest wind 7 to 9 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 60. Northwest wind 5 to 7 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 80%.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
Last Update:
9:26 pm CDT Jun 16, 2026
Forecast Valid:
11pm CDT Jun 16, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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