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.

Fair

60°F

16°C

Humidity 86%
Wind Speed Calm
Barometer 30.00 in (1015.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 17 Oct 4:53 am CDT
Extended Forecast for

2 Miles WSW Arnold MO

  • Today

    Today: Partly sunny, with a high near 84. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. South wind around 7 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 80. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 80 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 49. Southwest wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Sunday

    Sunday: Sunny, with a high near 65. Northwest wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 84. Light southeast wind becoming south 5 to 9 mph in the morning.
Tonight
Partly cloudy, with a low around 64. South wind around 7 mph.
Saturday
Showers and possibly a thunderstorm. High near 80. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 49. Southwest wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Sunday
Sunny, with a high near 65. Northwest wind 11 to 14 mph, with gusts as high as 26 mph.
Sunday Night
Clear, with a low around 44.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 70.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 48.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Arnold MO
 38.42°N 90.38°W (Elev. 495 ft)
Last Update:
4:56 am CDT Oct 17, 2025
Forecast Valid:
5am CDT Oct 17, 2025-6pm CDT Oct 23, 2025
 
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