Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

50°F

10°C

Humidity 43%
Wind Speed N 15 mph
Barometer 30.51 in (1033.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 27 Mar 6:53 pm CDT
Extended Forecast for

Barnhart MO

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning
  • Tonight

    Tonight: Widespread frost after 5am.  Otherwise, mostly clear, with a low around 29. North wind 5 to 9 mph becoming light  after midnight. Winds could gust as high as 20 mph.

    Low: 29 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost before 9am.  Otherwise, sunny, with a high near 57. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. South wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 70. South wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind around 7 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain and thunderstorms after 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of rain, then rain likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Rain Likely

Detailed Forecast

Tonight
Widespread frost after 5am. Otherwise, mostly clear, with a low around 29. North wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Widespread frost before 9am. Otherwise, sunny, with a high near 57. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 38. South wind around 6 mph.
Sunday
Partly sunny, with a high near 70. South wind 5 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind around 7 mph.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
A 20 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 85.
Tuesday Night
A chance of rain, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Wednesday
Rain likely and possibly a thunderstorm before 1pm, then a chance of rain and thunderstorms after 1pm. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 47.
Friday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Barnhart MO
 38.31°N 90.39°W (Elev. 499 ft)
5:41 pm CDT Mar 27, 2026
7pm CDT Mar 27, 2026-6pm CDT Apr 3, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database