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.

Mostly Cloudy

74°F

23°C

Humidity 82%
Wind Speed Calm
Barometer 30.08 in (1017.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Aug 11:51 pm CDT
Extended Forecast for

Pine Lawn 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 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 70 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 85. Northwest wind 5 to 8 mph.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. North wind 3 to 7 mph.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Slight
    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 86. Light and variable wind.
Friday Night
Increasing clouds, with a low around 70. Light and variable wind.
Saturday
Sunny, with a high near 85. Northwest wind 5 to 8 mph.
Saturday Night
Mostly clear, with a low around 65. North wind 3 to 7 mph.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Tuesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 69.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Pine Lawn MO
 38.69°N 90.29°W (Elev. 597 ft)
10:26 pm CDT Aug 20, 2026
12am CDT Aug 21, 2026-6pm CDT Aug 27, 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