Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

83°F

28°C

Humidity 53%
Wind Speed Calm
Barometer 30.07 in (1017.1 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Aug 11:51 am CDT
Extended Forecast for

3 Miles ESE Saint Louis MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 89. Light south wind.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am.  Increasing clouds, with a low around 72. Southeast wind around 5 mph becoming light and variable  after midnight.  Chance of precipitation is 60%.

    Low: 72 °F

    Partly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly before 10am, then a chance of showers and thunderstorms after 10am.  High near 80. West wind around 5 mph becoming light and variable  in the afternoon.  Chance of precipitation is 90%.

    High: 80 °F

    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 84. Northeast wind 3 to 5 mph.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 89. Light south wind.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 72. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm, mainly before 10am, then a chance of showers and thunderstorms after 10am. High near 80. West wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 84. Northeast wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 85.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Saint Louis MO
 38.62°N 90.2°W (Elev. 446 ft)
12:06 pm CDT Aug 18, 2026
12pm CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
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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