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Sumner, IA 7-Day Night Weather Forecast
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Sumner, IA Weather Forecast
Sumner, IA Weather Forecast Date: 128 AM CDT Thu Oct 01 2026
The area/counties/county of: Bremer, including the city of Waverly.or toggle through each period.
Rest of Tonight... Showers with a chance of thunderstorms. Patchy fog. Locally heavy rainfall possible. Near steady temperature in the mid 60s. East winds 5 to 10 mph. Chance of rain near 100%.
Thursday... Cloudy. Patchy fog in the morning. Showers likely with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Some thunderstorms May produce heavy rainfall in the morning. Near steady temperature in the mid 60s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70%.
Thursday Night... Mostly cloudy in the evening, then clearing. Cooler. Less humid with lows in the upper 40s. North winds 10 to 15 mph.
Friday... Sunny. Highs in the lower 60s. North winds 5 to 10 mph.
Friday Night... Mostly clear. Lows in the lower 40s. Northeast winds around 5 mph, becoming southeast after midnight.
Saturday... Sunny. Highs in the mid 60s.
Saturday Night... Mostly clear. Lows around 50.
Sunday... Sunny. Highs in the mid 60s.
Sunday Night... Mostly clear. Lows in the lower 40s.
Monday... Sunny. Highs in the lower 60s.
Monday Night... Clear. Lows in the mid 40s.
Tuesday... Mostly sunny. Highs in the mid 60s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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