Heat and Fire Weather Concerns West; Heavy Rain and Thunderstorms from Plains to mid-Atlantic

Thunderstorms and locally heavy rainfall is expected from the Central Plains to the Ohio Valley, mid-Atlantic and across the Southeast. Severe weather from the Upper Midwest to Central Plains increases on Friday. Major to Extreme HeatRisk continues across the Southern Plains to the lower Mississippi Valley late this week. Fire weather concerns for the northern Rockies and northern Plains today. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

78°F

26°C

Humidity 76%
Wind Speed NW 7 mph
Barometer 30.01 in (1015.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 10 Sep 2:51 pm CDT
Extended Forecast for

2 Miles ESE Pine Lawn MO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 4pm.  Mostly cloudy, with a high near 79. Light and variable wind.

    High: 79 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 70. Light northeast wind.

    Low: 70 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: A slight chance of showers before 11am, then a slight chance of showers after noon.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 84. Calm wind becoming east around 5 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 70. Light south wind.

    Low: 70 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the morning.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 90. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Mostly cloudy, with a high near 79. Light and variable wind.
Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 70. Light northeast wind.
Friday
A slight chance of showers before 11am, then a slight chance of showers after noon. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 84. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 70. Light south wind.
Saturday
Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the morning.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 72.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Pine Lawn MO
 38.69°N 90.23°W (Elev. 466 ft)
2:25 pm CDT Sep 10, 2026
3pm CDT Sep 10, 2026-6pm CDT Sep 17, 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