Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fog/Mist
58°F
14°C
| Humidity | 97% |
| Wind Speed | Calm |
| Barometer | 29.99 in (1015.3 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 3.00 mi |
| Last update | 11 Oct 9:53 pm CDT |
Extended Forecast for
Arnold MO
Tonight
Low: 50 °F
Mostly Clear
then Patchy
FogSunday
High: 81 °F
Patchy Fog
then SunnySunday Night
Low: 53 °F
Mostly Clear
Columbus Day
High: 83 °F
Mostly Sunny
Monday Night
Low: 61 °F
Partly Cloudy
Tuesday
High: 81 °F
Mostly Sunny
Tuesday Night
Low: 59 °F
Partly Cloudy
Wednesday
High: 79 °F
Mostly Sunny
Wednesday Night
Low: 54 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy fog after midnight. Otherwise, mostly clear, with a low around 50. Light southeast wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Southeast wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 53. Southeast wind around 6 mph becoming calm after midnight.
Columbus Day
Mostly sunny, with a high near 83. Light and variable wind.
Monday Night
Partly cloudy, with a low around 61. Calm wind.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 82.
Friday Night
A 20 percent chance of showers. Mostly clear, with a low around 60.
Saturday
A 40 percent chance of showers. Mostly sunny, with a high near 80.
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)
10:11 pm CDT Oct 11, 2025
10pm CDT Oct 11, 2025-6pm CDT Oct 18, 2025
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