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

80°F

27°C

Humidity 29%
Wind Speed NW 13 mph
Barometer 29.80 in (1008.6 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Jun 7:53 pm CDT
Extended Forecast for

Arnold MO

  • Tonight

    Tonight: Clear, with a low around 59. West wind 5 to 7 mph.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86. Northwest wind 5 to 8 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 63. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 63 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. South wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light and variable wind.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Mostly clear, with a low around 58.

    Low: 58 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers after 1pm. Sunny, with a high near 79.

    High: 79 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 59. West wind 5 to 7 mph.
Friday
Sunny, with a high near 86. Northwest wind 5 to 8 mph.
Friday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 63. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 40%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. South wind 5 to 8 mph. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light and variable wind.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of showers. Mostly clear, with a low around 58.
Monday
A 20 percent chance of showers after 1pm. Sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 91.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Arnold MO
 38.45°N 90.38°W (Elev. 499 ft)
Last Update:
5:52 pm CDT Jun 6, 2024
Forecast Valid:
8pm CDT Jun 6, 2024-6pm CDT Jun 13, 2024
 
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