Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
55°F
13°C
| Humidity | 74% |
| Wind Speed | W 9 mph |
| Barometer | 30.00 in (1015.8 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 53°F (12°C) |
| Last update | 5 Nov 8:53 pm CST |
Extended Forecast for
O'Fallon IL
Tonight
Low: 48 °F
Mostly Cloudy
Friday
High: 51 °F
Becoming
SunnyFriday Night
Low: 32 °F
Clear
Saturday
High: 53 °F
Sunny
Saturday Night
Low: 32 °F
Mostly Clear
Sunday
High: 61 °F
Sunny
Sunday Night
Low: 38 °F
Clear
Monday
High: 68 °F
Sunny
Monday Night
Low: 42 °F
Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 48. Northwest wind around 10 mph, with gusts as high as 21 mph.
Friday
Mostly cloudy, then gradual clearing during the afternoon, with a high near 51. North wind 7 to 11 mph.
Friday Night
Clear, with a low around 32. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 53. Northwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly clear, with a low around 32. Calm wind.
Sunday
Sunny, with a high near 61.
Sunday Night
Clear, with a low around 38.
Monday
Sunny, with a high near 68.
Monday Night
Clear, with a low around 42.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Clear, with a low around 40.
Veterans Day
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 62.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
O'Fallon IL
38.59°N 89.92°W (Elev. 551 ft)
38.59°N 89.92°W (Elev. 551 ft)
9:41 pm CST Nov 5, 2026
11pm CST Nov 5, 2026-6pm CST Nov 12, 2026
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