Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
A Few Clouds
60°F
16°C
| Humidity | 84% |
| Wind Speed | Calm |
| Barometer | 30.08 in (1018.5 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 24 Aug 10:53 pm CDT |
Extended Forecast for
Collinsville IL
Tonight
Low: 54 °F
Clear
Monday
High: 76 °F
Mostly Sunny
Monday Night
Low: 52 °F
Mostly Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 51 °F
Mostly Clear
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 58 °F
Mostly Cloudy
Thursday
High: 82 °F
Mostly Sunny
Thursday Night
Low: 59 °F
Partly Cloudy
Detailed Forecast
Tonight
Clear, with a low around 54. Light northwest wind.
Monday
Mostly sunny, with a high near 76. Light northwest wind increasing to 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 52. North wind 3 to 6 mph.
Tuesday
Sunny, with a high near 77. North wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 51. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Collinsville IL
38.68°N 90°W (Elev. 499 ft)
38.68°N 90°W (Elev. 499 ft)
10:41 pm CDT Aug 24, 2025
11pm CDT Aug 24, 2025-6pm CDT Aug 31, 2025
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