Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
77°F
25°C
| Humidity | 31% |
| Wind Speed | Calm |
| Barometer | 29.97 in (1014.7 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 6 Oct 5:53 pm CDT |
Extended Forecast for
3 Miles ESE Collinsville IL
Tonight
Low: 54 °F
Clear
Wednesday
High: 88 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 54 °F
Mostly Clear
Friday
High: 85 °F
Sunny
Friday Night
Low: 58 °F
Clear
Saturday
High: 89 °F
Sunny
Saturday Night
Low: 60 °F
Partly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
Clear, with a low around 54. Southwest 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 83. Calm wind becoming north 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 54. Northeast wind 3 to 6 mph.
Friday
Sunny, with a high near 85.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 59.
Columbus Day
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 60.
Tuesday
A 30 percent chance of showers. Sunny, with a high near 82.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles ESE Collinsville IL
38.66°N 89.95°W (Elev. 584 ft)
38.66°N 89.95°W (Elev. 584 ft)
2:51 pm CDT Oct 6, 2026
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
