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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

87°F

31°C

Humidity 70%
Wind Speed N 10 mph
Barometer 29.98 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 30 Jul 5:53 pm CDT
Extended Forecast for

Barnhart MO

Extreme Heat Warning July 30, 06:07pm until July 30, 07:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning July 30, 06:07pm until July 30, 07:00pm

    NOW until 7:00pm Wed

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Heavy Rain

  • Thursday

    Thursday: Scattered showers. Cloudy, with a high near 80. North wind 5 to 8 mph. Chance of precipitation is 40%.

    High: 80 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers before 10pm. Mostly cloudy, with a low around 65. North wind around 7 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Northeast wind 6 to 8 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Northeast wind 3 to 7 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Tonight
Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 73. East wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 50%.
Thursday
Scattered showers. Cloudy, with a high near 80. North wind 5 to 8 mph. Chance of precipitation is 40%.
Thursday Night
Isolated showers before 10pm. Mostly cloudy, with a low around 65. North wind around 7 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 81. Northeast wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 60. Northeast wind 3 to 7 mph.
Saturday
Sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Barnhart MO
 38.34°N 90.39°W (Elev. 587 ft)
Last Update:
4:16 pm CDT Jul 30, 2025
Forecast Valid:
6pm CDT Jul 30, 2025-6pm CDT Aug 6, 2025
 
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