Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

73°F

23°C

Humidity 81%
Wind Speed E 3 mph
Barometer 30.07 in (1017.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 21 Aug 12:51 am CDT
Extended Forecast for

Wellston MO

  • Overnight

    Overnight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 70. Light southwest wind.

    Low: 70 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 86. North wind 5 to 9 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. North wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Light and variable wind.
Friday Night
Increasing clouds, with a low around 70. Light southwest wind.
Saturday
Sunny, with a high near 86. North wind 5 to 9 mph.
Saturday Night
Mostly clear, with a low around 66. North wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Wellston MO
 38.67°N 90.29°W (Elev. 515 ft)
1:26 am CDT Aug 21, 2026
1am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
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Additional Resources

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