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

72°F

22°C

Humidity 87%
Wind Speed SW 3 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 24 Jun 11:53 pm CDT
Extended Forecast for

Barnhart MO

Flood Watch June 25, 01:00pm until June 26, 07:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: A slight chance of showers and thunderstorms between 2am and 4am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 69. Light and variable wind. Chance of precipitation is 80%.

    Low: 69 °F

    Chance
    T-storms then
    T-storms

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 83. Southeast wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 83 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms between 2am and 4am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 86. Calm wind.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 69. Light and variable wind. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. High near 83. Southeast wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny and hot, with a high near 98.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Barnhart MO
 38.34°N 90.41°W (Elev. 597 ft)
Last Update:
12:11 am CDT Jun 25, 2026
Forecast Valid:
12am CDT Jun 25, 2026-6pm CDT Jul 1, 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