Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
50°F
10°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.36 in (1028.1 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 24 Oct 11:53 pm CDT |
Extended Forecast for
Waterloo IL
Overnight
Low: 48 °F
Mostly Clear
Sunday
High: 78 °F
Mostly Sunny
Sunday Night
Low: 51 °F
Mostly Cloudy
Monday
High: 76 °F
Partly Sunny
Monday Night
Low: 50 °F
Partly Cloudy
Tuesday
High: 74 °F
Mostly Cloudy
Tuesday Night
Low: 52 °F
Mostly Cloudy
Wednesday
High: 79 °F
Mostly Sunny
Wednesday Night
Low: 54 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 48. Calm wind.
Sunday
Mostly sunny, with a high near 78. Calm wind.
Sunday Night
Mostly cloudy, with a low around 51. Light and variable wind.
Monday
Partly sunny, with a high near 76. Calm wind.
Monday Night
Partly cloudy, with a low around 50. Calm wind.
Tuesday
Mostly cloudy, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 54.
Friday
Mostly sunny, with a high near 79.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 75.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Waterloo IL
38.33°N 90.16°W (Elev. 600 ft)
38.33°N 90.16°W (Elev. 600 ft)
10:57 pm CDT Oct 24, 2026
12am CDT Oct 25, 2026-6pm CDT Oct 31, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
