Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
44°F
7°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 30.14 in (1020.6 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 6 Oct 5:53 am CDT |
Extended Forecast for
Collinsville IL
Today
High: 80 °F
Sunny
Tonight
Low: 54 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 53 °F
Mostly Clear
Friday
High: 83 °F
Sunny
Friday Night
Low: 55 °F
Mostly Clear
Saturday
High: 87 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the morning.
Tonight
Mostly clear, with a low around 54. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 88. West wind 5 to 9 mph.
Wednesday Night
Mostly clear, with a low around 57. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Calm wind becoming north 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 87.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 61.
Columbus Day
Mostly sunny, with a high near 88.
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)
4:46 am CDT Oct 6, 2026
6am CDT Oct 6, 2026-6pm CDT Oct 12, 2026
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