Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
54°F
12°C
| Humidity | 57% |
| Wind Speed | N 5 mph |
| Barometer | 30.57 in (1035.1 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 53°F (12°C) |
| Last update | 17 Oct 11:53 am CDT |
Extended Forecast for
Arnold MO
Frost Advisory October 18, 01:00am until October 18, 09:00am
This Afternoon
High: 60 °F
Sunny
Tonight
Low: 37 °F
Clear
Sunday
High: 69 °F
Patchy Frost
then SunnySunday Night
Low: 38 °F
Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 41 °F
Mostly Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 44 °F
Mostly Clear
Wednesday
High: 78 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 60. Light north wind.
Tonight
Clear, with a low around 37. Calm wind.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 38. Light and variable wind.
Monday
Sunny, with a high near 72. Calm wind.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 83.
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)
12:46 pm CDT Oct 17, 2026
12pm CDT Oct 17, 2026-6pm CDT Oct 23, 2026
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