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.

A Few Clouds

84°F

29°C

Humidity 49%
Wind Speed S 16 G 26 mph
Barometer 29.78 in (1008.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 10 Mar 1:53 pm CDT
Extended Forecast for

Barnhart MO

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 82. South wind around 13 mph, with gusts as high as 25 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 3pm, then a slight chance of rain between 3pm and 4pm. Temperature falling to around 51 by 5pm. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.

    High: 69 °F⇓

    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 6 to 13 mph, with gusts as high as 26 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 56. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 82. South wind around 13 mph, with gusts as high as 25 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 23 mph.
Wednesday
Rain and possibly a thunderstorm before 3pm, then a slight chance of rain between 3pm and 4pm. Temperature falling to around 51 by 5pm. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 6 to 13 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 56. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 51.
Sunday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 67. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Monday
Sunny, with a high near 38.
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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:
2:06 pm CDT Mar 10, 2026
Forecast Valid:
2pm CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation