Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

75°F

24°C

Humidity 62%
Wind Speed E 9 mph
Barometer 30.09 in (1018.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 25 Aug 9:51 am CDT
Extended Forecast for

Greendale MO

  • Today

    Today: Mostly sunny, with a high near 87. East wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 71. East wind around 6 mph becoming calm  in the evening.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Calm wind becoming west 5 to 7 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, then gradually becoming mostly clear, with a low around 70. North wind 3 to 6 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 87. North wind 3 to 8 mph.

    High: 87 °F

    Sunny

  • Thursday Night

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

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

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

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. East wind around 5 mph.
Tonight
Partly cloudy, with a low around 71. East wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 91. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 70. North wind 3 to 6 mph.
Thursday
Sunny, with a high near 87. North wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 67.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 76.
Monday
Mostly sunny, with a high near 96.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Greendale MO
 38.69°N 90.31°W (Elev. 594 ft)
9:11 am CDT Aug 25, 2026
9am CDT Aug 25, 2026-6pm CDT Aug 31, 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