Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Light Rain
70°F
21°C
| Humidity | 93% |
| Wind Speed | S 3 mph |
| Barometer | 29.96 in (1013.5 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 9.00 mi |
| Last update | 14 Oct 1:54 am CDT |
Extended Forecast for
O'Fallon MO
Overnight
Low: 70 °F
T-storms
Wednesday
High: 76 °F
T-storms then
Chance
T-stormsWednesday Night
Low: 65 °F
Chance
T-stormsThursday
High: 81 °F
Showers then
Showers
LikelyThursday Night
Low: 48 °F
Showers
Friday
High: 59 °F
Mostly Sunny
and BreezyFriday Night
Low: 39 °F
Mostly Clear
Saturday
High: 61 °F
Sunny
Saturday Night
Low: 39 °F
Clear
Detailed Forecast
Overnight
Showers and thunderstorms. Low around 70. Northwest wind around 7 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 76. North wind 3 to 6 mph. Chance of precipitation is 80%.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 65. North wind around 6 mph becoming light and variable. Chance of precipitation is 40%.
Thursday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. High near 81. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 48. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
Mostly sunny, with a high near 59. Breezy.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 77.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
O'Fallon MO
38.79°N 90.71°W (Elev. 535 ft)
38.79°N 90.71°W (Elev. 535 ft)
1:26 am CDT Oct 14, 2026
3am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
