Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
80°F
27°C
| Humidity | 34% |
| Wind Speed | NA |
| Barometer | 30.25 in (1024.1 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 14 Oct 12:53 pm CDT |
Extended Forecast for
Arnold MO
This Afternoon
High: 84 °F
Mostly Sunny
Tonight
Low: 57 °F
Mostly Clear
Wednesday
High: 85 °F
Mostly Sunny
Wednesday Night
Low: 58 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 59 °F
Partly Cloudy
Friday
High: 86 °F
Partly Sunny
Friday Night
Low: 64 °F
Mostly Clear
then Chance
T-stormsSaturday
High: 77 °F
Showers
Likely
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 84. Light east wind.
Tonight
Mostly clear, with a low around 57. Light southeast wind.
Wednesday
Mostly sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 58. Calm wind.
Thursday
Sunny, with a high near 83. Calm wind becoming southeast 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 86.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51.
Sunday
A 20 percent chance of showers. Sunny, with a high near 69.
Sunday Night
Clear, with a low around 45.
Monday
Sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Arnold MO
38.42°N 90.38°W (Elev. 495 ft)
38.42°N 90.38°W (Elev. 495 ft)
10:11 am CDT Oct 14, 2025
1pm CDT Oct 14, 2025-6pm CDT Oct 20, 2025
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