Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
33°F
1°C
| Humidity | 85% |
| Wind Speed | Calm |
| Barometer | 30.05 in (1017.6 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Last update | 12 Nov 4:53 am CST |
Extended Forecast for
O'Fallon IL
Today
High: 65 °F
Sunny
Tonight
Low: 39 °F
Mostly Clear
Thursday
High: 63 °F
Partly Sunny
Thursday Night
Low: 49 °F
Mostly Cloudy
Friday
High: 74 °F
Mostly Sunny
Friday Night
Low: 57 °F
Partly Cloudy
Saturday
High: 77 °F
Mostly Sunny
Saturday Night
Low: 47 °F
Partly Cloudy
Sunday
High: 63 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 65. Northwest wind 6 to 10 mph.
Tonight
Mostly clear, with a low around 39. West wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 63. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 49. South wind around 7 mph.
Friday
Mostly sunny, with a high near 74. South wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 40.
Monday
A 30 percent chance of rain and thunderstorms. Mostly sunny, with a high near 58.
Monday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain. Mostly sunny, with a high near 61.
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)
5:06 am CST Nov 12, 2025
5am CST Nov 12, 2025-6pm CST Nov 18, 2025
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