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

38°F

3°C

Humidity 68%
Wind Speed Calm
Barometer 29.76 in (1007.9 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 25 Feb 7:53 am CST
Extended Forecast for

Barnhart MO

  • Today

    Today: Mostly cloudy, with a high near 54. Light and variable wind.

    High: 54 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 35. Light northeast wind.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 55. East wind around 5 mph becoming calm in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Light and variable wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. Southwest wind 3 to 7 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 33.

    Low: 33 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 54. Light and variable wind.
Tonight
A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 35. Light northeast wind.
Thursday
Mostly sunny, with a high near 55. East wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 34. Light and variable wind.
Friday
Sunny, with a high near 69. Southwest wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 33.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 49.
Sunday Night
Rain likely before midnight, then a chance of rain and snow. Some thunder is also possible. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 44.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 30.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 49.
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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:
5:26 am CST Feb 25, 2026
Forecast Valid:
8am CST Feb 25, 2026-6pm CST Mar 3, 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