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.

Partly Cloudy

84°F

29°C

Humidity 63%
Wind Speed N 8 mph
Barometer 30.05 in (1017.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 7 Jul 2:53 pm CDT
Extended Forecast for

Barnhart MO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 86. Northeast wind around 5 mph.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Light north wind.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 20%.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Chance of precipitation is 70%.

    Low: 73 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 86. Northeast wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Light north wind.
Wednesday
A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 70. Calm wind.
Thursday
Mostly sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Friday Night
Showers and possibly a thunderstorm. Low around 71. Chance of precipitation is 80%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 70.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 92.
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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:
1:26 pm CDT Jul 7, 2026
Forecast Valid:
3pm CDT Jul 7, 2026-6pm CDT Jul 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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