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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

98°F

37°C

Humidity 35%
Wind Speed NW 10 G 20 mph
Barometer 29.89 in (1010.5 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 18 Jun 12:51 pm CDT
Extended Forecast for

Saint Louis MO

Heat Advisory until June 18, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 18, 07:00pm

    NOW until
    7:00pm Fri

    Heat Advisory

  • This
    Afternoon

    This Afternoon: Sunny and hot, with a high near 102. Heat index values as high as 107. Southwest wind around 11 mph.

    Hot

    High: 102 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 79. Southwest wind 7 to 9 mph.

    Partly Cloudy

    Low: 79 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 97. Heat index values as high as 102. Southwest wind 7 to 9 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 97 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 75. South wind 3 to 6 mph.

    Partly Cloudy

    Low: 75 °F

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 97. South wind 5 to 10 mph, with gusts as high as 21 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 97 °F

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 75.

    Partly Cloudy
    then Chance
    T-storms

    Low: 75 °F

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 86. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 86 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 59.

    Chance
    T-storms

    Low: 59 °F

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 102. Heat index values as high as 107. Southwest wind around 11 mph.
Tonight
Partly cloudy, with a low around 79. Southwest wind 7 to 9 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 102. Southwest wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 75. South wind 3 to 6 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. South wind 5 to 10 mph, with gusts as high as 21 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75.
Monday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 59.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
12:26 pm CDT Jun 18, 2021
1pm CDT Jun 18, 2021-6pm CDT Jun 24, 2021
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database