Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
48°F
9°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 29.83 in (1010.2 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 5 Nov 1:53 am CST |
Extended Forecast for
O'Fallon IL
Overnight
Low: 46 °F
Clear
Thursday
High: 62 °F
Increasing
CloudsThursday Night
Low: 46 °F
Slight Chance
Rain then
Mostly CloudyFriday
High: 54 °F
Decreasing
CloudsFriday Night
Low: 33 °F
Mostly Clear
Saturday
High: 54 °F
Sunny
Saturday Night
Low: 33 °F
Mostly Clear
Sunday
High: 59 °F
Sunny
Sunday Night
Low: 37 °F
Clear
Detailed Forecast
Overnight
Clear, with a low around 46. West wind around 7 mph.
Thursday
Increasing clouds, with a high near 62. West wind 6 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of rain between 9pm and 10pm. Mostly cloudy, with a low around 46. Northwest wind around 9 mph. Chance of precipitation is 20%.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 54. North wind 8 to 13 mph.
Friday Night
Mostly clear, with a low around 33. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 37.
Monday
Sunny, with a high near 65.
Monday Night
Clear, with a low around 42.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 42.
Veterans Day
Mostly sunny, with a high near 65.
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)
1:46 am CST Nov 5, 2026
2am CST Nov 5, 2026-6pm CST Nov 11, 2026
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