NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment
After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >
Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
A Few Clouds
75°F
24°C
| Humidity | 69% |
| Wind Speed | S 8 G 20 mph |
| Barometer | 29.92 in (1012.9 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 17 May 8:53 am CDT |
Extended Forecast for
Waterloo IL
Today
High: 89 °F
Becoming
SunnyTonight
Low: 71 °F
Increasing
CloudsMonday
High: 88 °F
Chance
T-storms then
Showers
LikelyMonday Night
Low: 70 °F
Partly Cloudy
Tuesday
High: 86 °F
Showers
Tuesday Night
Low: 58 °F
Showers
Wednesday
High: 70 °F
Slight Chance
ShowersWednesday Night
Low: 52 °F
Slight Chance
ShowersThursday
High: 72 °F
Partly Sunny
Detailed Forecast
Today
Mostly cloudy early, then gradual clearing, with a high near 89. South wind 7 to 16 mph, with gusts as high as 26 mph.
Tonight
Increasing clouds, with a low around 71. South wind 11 to 13 mph, with gusts as high as 23 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 70. South wind around 14 mph, with gusts as high as 24 mph.
Tuesday
Showers and possibly a thunderstorm. High near 86. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 70.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 72.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 55.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 59.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Additional Forecasts and Information
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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)
8:46 am CDT May 17, 2026
9am CDT May 17, 2026-6pm CDT May 23, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
