Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
66°F
19°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 30.03 in (1016.5 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 22 Aug 11:53 pm CDT |
Extended Forecast for
Collinsville IL
Overnight
Low: 64 °F
Mostly Clear
Saturday
High: 87 °F
Partly Sunny
Saturday Night
Low: 59 °F
Decreasing
CloudsSunday
High: 80 °F
Sunny
Sunday Night
Low: 57 °F
Mostly Clear
Monday
High: 77 °F
Mostly Sunny
Monday Night
Low: 53 °F
Partly Cloudy
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 52 °F
Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 64. Calm wind.
Saturday
Partly sunny, with a high near 87. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 59. North wind around 6 mph.
Sunday
Sunny, with a high near 80. Northwest wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Clear, with a low around 52.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 58.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Collinsville IL
38.68°N 89.97°W (Elev. 502 ft)
38.68°N 89.97°W (Elev. 502 ft)
12:01 am CDT Aug 23, 2025
12am CDT Aug 23, 2025-6pm CDT Aug 29, 2025
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