Three Weather Areas of Concern Today

Potential Tropical Cyclone Three will gradually approach the northern Gulf Coast with heavy rain and potential flooding. Meanwhile, a sharp cold front will produce severe thunderstorms with significant winds, hail, tornadoes and possible flooding across the Ohio Valley. Finally, a large dome of high pressure will continue the major heat wave over the West, extending into the central Plains. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

29°C

84°F

Humidity 78%
Wind Speed S 26 G 35 km/h
Barometer 29.80 in
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index34°C (93°F)
Last update 19 Jun 12:15 am CDT
Extended Forecast for

West Alton MO

Heat Advisory until June 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 20, 07:00pm

    NOW until
    7:00pm Sun

    Heat Advisory

  • Overnight

    Overnight: Isolated showers and thunderstorms after 3am.  Partly cloudy, with a low around 24. Southwest wind 13 to 16 km/h.  Chance of precipitation is 20%.

    Isolated
    T-storms

    Low: 24 °C

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny and hot, with a high near 36. Heat index values as high as 39. South wind 11 to 16 km/h.

    Chance
    T-storms

    High: 36 °C

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could produce heavy rainfall.  Partly cloudy, with a low around 23. Southwest wind 5 to 10 km/h becoming calm  after midnight.

    Heavy Rain

    Low: 23 °C

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 36. Southwest wind 8 to 13 km/h increasing to 16 to 21 km/h in the afternoon. Winds could gust as high as 35 km/h.

    Hot

    High: 36 °C

  • Sunday
    Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 22. Southwest wind 13 to 18 km/h, with gusts as high as 32 km/h.

    Chance
    T-storms

    Low: 22 °C

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 27.

    Chance
    T-storms

    High: 27 °C

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 13.

    Mostly Clear

    Low: 13 °C

  • Tuesday

    Tuesday: Sunny, with a high near 26.

    Sunny

    High: 26 °C

Detailed Forecast

Overnight
Isolated showers and thunderstorms after 3am. Partly cloudy, with a low around 24. Southwest wind 13 to 16 km/h. Chance of precipitation is 20%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 36. Heat index values as high as 39. South wind 11 to 16 km/h.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 23. Southwest wind 5 to 10 km/h becoming calm after midnight.
Sunday
Mostly sunny and hot, with a high near 36. Southwest wind 8 to 13 km/h increasing to 16 to 21 km/h in the afternoon. Winds could gust as high as 35 km/h.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22. Southwest wind 13 to 18 km/h, with gusts as high as 32 km/h.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Sunny, with a high near 26.
Tuesday Night
Mostly clear, with a low around 15.
Wednesday
Sunny, with a high near 29.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 18.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 30.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.
Click Map For Forecast
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 130 m)
12:11 am CDT Jun 19, 2021
12am CDT Jun 19, 2021-6pm CDT Jun 24, 2021
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database