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, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 30.06 in (1017.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Aug 7:54 am CDT
Extended Forecast for

High Ridge MO

  • Today

    Today: Sunny, with a high near 87. Calm wind becoming south around 5 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Isolated showers, then showers and thunderstorms likely after 3am.  Increasing clouds, with a low around 70. Calm wind becoming southeast around 5 mph after midnight.  Chance of precipitation is 60%.

    Low: 70 °F

    Mostly Clear
    then T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 7am, then showers and possibly a thunderstorm between 7am and 9am, then scattered showers and thunderstorms after 9am.  High near 83. South wind 5 to 7 mph becoming light and variable  in the afternoon.  Chance of precipitation is 80%.

    High: 83 °F

    T-storms then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 82. Northeast wind 3 to 5 mph.

    High: 82 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am.  Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Calm wind becoming south around 5 mph.
Tonight
Isolated showers, then showers and thunderstorms likely after 3am. Increasing clouds, with a low around 70. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 7am, then showers and possibly a thunderstorm between 7am and 9am, then scattered showers and thunderstorms after 9am. High near 83. South wind 5 to 7 mph becoming light and variable in the afternoon. Chance of precipitation is 80%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 82. Northeast wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 85.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 83.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
High Ridge MO
 38.47°N 90.52°W (Elev. 797 ft)
5:21 am CDT Aug 18, 2026
8am CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database