Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
87°F
31°C
| Humidity | 34% |
| Wind Speed | SW 9 G 17 mph |
| Barometer | 29.90 in (1012.1 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 7 Oct 1:53 pm CDT |
Extended Forecast for
3 Miles NNE O'Fallon IL
This Afternoon
High: 88 °F
Sunny
Tonight
Low: 57 °F
Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 58 °F
Clear
Friday
High: 89 °F
Sunny
Friday Night
Low: 61 °F
Mostly Clear
Saturday
High: 86 °F
Mostly Sunny
Saturday Night
Low: 58 °F
Chance
ShowersSunday
High: 78 °F
Partly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 88. West wind around 11 mph.
Tonight
Clear, with a low around 57. West wind around 6 mph becoming calm after midnight.
Thursday
Sunny, with a high near 84. Light north wind.
Thursday Night
Clear, with a low around 58. Light and variable wind.
Friday
Sunny, with a high near 89. Light southeast wind becoming south 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 59.
Columbus Day
Mostly sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 74.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNE O'Fallon IL
38.63°N 89.89°W (Elev. 518 ft)
38.63°N 89.89°W (Elev. 518 ft)
1:26 pm CDT Oct 7, 2026
2pm CDT Oct 7, 2026-6pm CDT Oct 13, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
