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Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
31°F
-1°C
| Humidity | 72% |
| Wind Speed | N 8 mph |
| Barometer | 30.30 in (1026.6 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 3 Feb 9:53 pm CST |
Extended Forecast for
Collinsville IL
Tonight
Low: 21 °F
Mostly Cloudy
Wednesday
High: 31 °F
Partly Sunny
Wednesday Night
Low: 16 °F
Partly Cloudy
Thursday
High: 39 °F
Partly Sunny
Thursday Night
Low: 33 °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 around 6 mph.
Wednesday
Partly sunny, with a high near 31. North wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 16. North wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 39. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 33. 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 54.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Collinsville IL
38.66°N 90°W (Elev. 499 ft)
38.66°N 90°W (Elev. 499 ft)
9:46 pm CST Feb 3, 2026
10pm CST Feb 3, 2026-6pm CST Feb 10, 2026
Additional Resources
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Hourly Weather Forecast
