Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Light Rain

72°F

22°C

Humidity 91%
Wind Speed N 5 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 19 Aug 5:54 am CDT
Extended Forecast for

Weldon Spring Heights MO

  • Today

    Today: Showers and possibly a thunderstorm before 11am, then scattered showers and thunderstorms, mainly between 11am and 1pm.  High near 81. Light and variable wind.  Chance of precipitation is 80%.

    High: 81 °F

    Showers then
    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers and thunderstorms before midnight.  Mostly cloudy, with a low around 67. Light north wind.  Chance of precipitation is 20%.

    Low: 67 °F

    Isolated
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Friday Night

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

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm before 11am, then scattered showers and thunderstorms, mainly between 11am and 1pm. High near 81. Light and variable wind. Chance of precipitation is 80%.
Tonight
Isolated showers and thunderstorms before midnight. Mostly cloudy, with a low around 67. Light north wind. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 87. Calm wind.
Friday Night
Mostly clear, with a low around 67.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.
Monday
Partly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring Heights MO
 38.7°N 90.65°W (Elev. 492 ft)
6:21 am CDT Aug 19, 2026
6am CDT Aug 19, 2026-6pm CDT Aug 25, 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