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City of Waterloo, IAWaterloo, IA 7-Day Night Weather Forecast
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Waterloo, IA Weather Forecast
Waterloo, IA Weather Forecast Date: 553 PM CDT Mon Sep 07 2026
The area/counties/county of: Black Hawk, including the cities of: Waterloo and Cedar Falls.or toggle through each period.
Tonight... Mostly cloudy. Lows in the mid 60s. Southeast winds 10 to 15 mph.
Tuesday... Partly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the mid 80s. South winds 10 to 15 mph. Chance of rain 50%.
Tuesday Night... Showers with a chance of thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph, becoming southwest after midnight. Chance of rain 90%.
Wednesday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny in the afternoon. Humid with highs in the lower 80s. West winds 5 to 10 mph. Chance of rain 40%.
Wednesday Night... Mostly clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.
Thursday... Sunny. Highs in the upper 70s.
Thursday Night... Clear. Lows in the upper 50s.
Friday... Mostly sunny. Highs in the lower 80s.
Friday Night... A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the lower 60s. Chance of rain 60%.
Saturday... Mostly sunny with a 20% chance of showers. Highs around 80.
Saturday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 20%.
Sunday... Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 40%.
Sunday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 50%.
POP = Probability of Precipitation
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