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Heavy rain and flash flooding possible in portions of the Southwest this weekend

An upper-level low in the Southwest U.S. will act as a trigger for thunderstorms this weekend. The area of greatest concern is in New Mexico, southeast Utah and portions of southern Colorado. Storms will be slow moving and could bring several rounds of rain to the same areas. Rainfall amounts may exceed 3 inches in localized areas. Flash Flood Watches are in effect. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

33°C

91°F

Humidity 45%
Wind Speed NW 9 km/h
Barometer 1011.9 mb (29.92 in)
Dewpoint 19°C (67°F)
Visibility 16 km
Heat Index34°C (94°F)
Last update 19 Aug 4:51 pm CDT
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Mostly clear, with a low around 23. Calm wind.

    Mostly Clear

    Low: 23 °C

  • Sunday

    Sunday: Sunny and hot, with a high near 36. Calm wind.

    Hot

    High: 36 °C

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 24. South wind 3 to 8 km/h.

    Partly Cloudy

    Low: 24 °C

  • Monday

    Monday: Mostly sunny, with a high near 34. Heat index values as high as 39. South wind 3 to 8 km/h.

    Mostly Sunny

    High: 34 °C

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 24. South wind 8 to 10 km/h.

    Mostly Cloudy
    then Chance
    T-storms

    Low: 24 °C

  • Tuesday

    Tuesday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 31. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 31 °C

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 21.

    Chance
    T-storms

    Low: 21 °C

  • Wednesday

    Wednesday: Sunny, with a high near 28.

    Sunny

    High: 28 °C

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 17.

    Mostly Clear

    Low: 17 °C

Detailed Forecast

Tonight
Mostly clear, with a low around 23. Calm wind.
Sunday
Sunny and hot, with a high near 36. Calm wind.
Sunday Night
Partly cloudy, with a low around 24. South wind 3 to 8 km/h.
Monday
Mostly sunny, with a high near 34. Heat index values as high as 39. South wind 3 to 8 km/h.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 24. South wind 8 to 10 km/h.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 31. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 21.
Wednesday
Sunny, with a high near 28.
Wednesday Night
Mostly clear, with a low around 17.
Thursday
Sunny, with a high near 27.
Thursday Night
Mostly clear, with a low around 16.
Friday
Sunny, with a high near 27.
Friday Night
Mostly clear, with a low around 16.
Saturday
Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 164 m)
12:44 pm CDT Aug 19, 2017
5pm CDT Aug 19, 2017-6pm CDT Aug 26, 2017
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database