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.

Fair

78°F

26°C

Humidity 79%
Wind Speed SW 5 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 19 Aug 11:54 am CDT
Extended Forecast for

2 Miles SSE Glencoe MO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 82. Calm wind.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • 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: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • 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

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Calm wind.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind.
Thursday Night
Partly cloudy, 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
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:
2 Miles SSE Glencoe MO
 38.54°N 90.63°W (Elev. 499 ft)
11:26 am CDT Aug 19, 2026
12pm 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