News Headlines
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
30°F
-1°C
| Humidity | 75% |
| Wind Speed | N 8 mph |
| Barometer | 30.28 in (1025.8 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Wind Chill | 22°F (-6°C) |
| Last update | 3 Feb 7:53 pm CST |
Extended Forecast for
Collinsville IL
Tonight
Low: 21 °F
Mostly Cloudy
Wednesday
High: 30 °F
Partly Sunny
Wednesday Night
Low: 15 °F
Partly Cloudy
Thursday
High: 40 °F
Partly Sunny
Thursday Night
Low: 32 °F
Mostly Clear
Friday
High: 49 °F
Sunny
Friday Night
Low: 24 °F
Mostly Clear
Saturday
High: 41 °F
Sunny
Saturday Night
Low: 29 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 21. North wind 3 to 8 mph.
Wednesday
Partly sunny, with a high near 30. North wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 15. Light and variable wind.
Thursday
Partly sunny, with a high near 40. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 32. South wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 48.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 55.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
7:36 pm CST Feb 3, 2026
8pm CST Feb 3, 2026-6pm CST Feb 10, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
