National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

48°F

9°C

Humidity 93%
Wind Speed Calm
Barometer 30.10 in (1019.3 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 9 Oct 6:53 am CDT
Extended Forecast for

Barnhart MO

  • Today

    Today: Sunny, with a high near 89. South wind 3 to 7 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. Southeast wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 80. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 80 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. East wind 3 to 6 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming northwest around 5 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 89. South wind 3 to 7 mph.
Tonight
Increasing clouds, with a low around 58. Southeast wind around 6 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 80. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 57. East wind 3 to 6 mph.
Sunday
Sunny, with a high near 83. Calm wind becoming northwest around 5 mph.
Sunday Night
Mostly clear, with a low around 60.
Columbus Day
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 63.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Barnhart MO
 38.36°N 90.41°W (Elev. 449 ft)
Last Update:
5:01 am CDT Oct 9, 2026
Forecast Valid:
7am CDT Oct 9, 2026-6pm CDT Oct 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation