Inclement Weather in the Pacific Northwest; Heavy Rain and Thunderstorms in Southern Texas
A series of cold fronts will continue to bring periods of gusty winds, low elevation rainfall, and high elevation snow to the Pacific Northwest this week. Heavy to excessive rainfall may produce areas of flooding over southern Texas through Monday morning. Read More >
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
62°F
17°C
| Humidity | 58% |
| Wind Speed | Vrbl 3 mph |
| Barometer | 30.18 in (1022.1 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 9 Nov 10:53 am CST |
Extended Forecast for
O'Fallon IL
Today
High: 69 °F
Sunny
Tonight
Low: 45 °F
Clear
Tuesday
High: 70 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Veterans Day
High: 69 °F
Mostly Sunny
then Showers
LikelyWednesday Night
Low: 43 °F
Slight Chance
T-storms then
Mostly CloudyThursday
High: 52 °F
Partly Sunny
and BreezyThursday Night
Low: 34 °F
Partly Cloudy
Friday
High: 46 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 69. Calm wind becoming southwest around 5 mph.
Tonight
Clear, with a low around 45. Calm wind becoming west around 5 mph.
Tuesday
Sunny, with a high near 70. West wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Veterans Day
Showers likely and possibly a thunderstorm between noon and 3pm, then showers likely after 3pm. Partly sunny, with a high near 69. Light and variable wind becoming west 9 to 14 mph in the morning. Chance of precipitation is 60%.
Wednesday Night
A slight chance of showers before 9pm, then a slight chance of showers and thunderstorms between 9pm and midnight. Mostly cloudy, with a low around 43. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 52. Breezy.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 59.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
O'Fallon IL
38.59°N 89.89°W (Elev. 541 ft)
38.59°N 89.89°W (Elev. 541 ft)
11:06 am CST Nov 9, 2026
11am CST Nov 9, 2026-6pm CST Nov 15, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
