Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
88°F
31°C
| Humidity | 18% |
| Wind Speed | W 10 mph |
| Barometer | 29.81 in (1009.2 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 10.00 mi |
| Heat Index | 84°F (29°C) |
| Last update | 20 Mar 5:53 pm CDT |
Extended Forecast for
4 Miles SW Waterloo IL
Tonight

Low: 53 °F
Partly Cloudy
Saturday

High: 83 °F
Sunny
Saturday Night

Low: 62 °F
Clear
Sunday

High: 86 °F
Sunny
Sunday Night

Low: 40 °F
Partly Cloudy
Monday

High: 57 °F
Mostly Sunny
Monday Night

Low: 40 °F
Partly Cloudy
Tuesday

High: 59 °F
Partly Sunny
Tuesday Night
Low: 43 °F
Partly Cloudy
then Slight
Chance
T-storms
Detailed Forecast
Tonight
Partly cloudy, with a low around 53. West wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 83. Light and variable wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 62. South wind 6 to 10 mph.
Sunday
Sunny, with a high near 86. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 40. North wind 14 to 16 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
A 20 percent chance of rain. Sunny, with a high near 79.
Thursday Night
A 50 percent chance of rain. Partly cloudy, with a low around 41.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 53.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles SW Waterloo IL
38.29°N 90.19°W (Elev. 633 ft)
38.29°N 90.19°W (Elev. 633 ft)
1:56 pm CDT Mar 20, 2026
6pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026



