Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Mostly Cloudy
88°F
31°C
| Humidity | 55% |
| Wind Speed | W 6 mph |
| Barometer | 29.98 in (1014.4 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 93°F (34°C) |
| Last update | 14 Aug 1:54 pm CDT |
Extended Forecast for
O'Fallon MO
This Afternoon
High: 87 °F
Mostly Sunny
Tonight
Low: 70 °F
Mostly Clear
Friday
High: 94 °F
Sunny
Friday Night
Low: 73 °F
Mostly Clear
Saturday
High: 96 °F
Sunny
Saturday Night
Low: 74 °F
Mostly Clear
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 95 °F
Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 87. Light southwest wind.
Tonight
Mostly clear, with a low around 70. Light and variable wind.
Friday
Sunny, with a high near 94. Heat index values as high as 101. South wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 73. Light southeast wind.
Saturday
Sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 95.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
O'Fallon MO
38.77°N 90.71°W (Elev. 522 ft)
38.77°N 90.71°W (Elev. 522 ft)
10:41 am CDT Aug 14, 2025
2pm CDT Aug 14, 2025-6pm CDT Aug 20, 2025
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