Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
79°F
26°C
| Humidity | 36% |
| Wind Speed | S 5 mph |
| Barometer | 30.19 in (1022.0 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 27 Aug 3:53 pm CDT |
Extended Forecast for
Arnold MO
Tonight
Low: 58 °F
Mostly Cloudy
Thursday
High: 83 °F
Mostly Sunny
Thursday Night
Low: 57 °F
Mostly Clear
Friday
High: 86 °F
Sunny
Friday Night
Low: 58 °F
Mostly Clear
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 59 °F
Partly Cloudy
Sunday
High: 83 °F
Mostly Sunny
Sunday Night
Low: 58 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 57. South wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58. Light east wind.
Saturday
Sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 58.
Labor Day
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Arnold MO
38.42°N 90.35°W (Elev. 400 ft)
38.42°N 90.35°W (Elev. 400 ft)
4:16 pm CDT Aug 27, 2025
4pm CDT Aug 27, 2025-6pm CDT Sep 3, 2025
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