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Summit Lake, IA Weather Forecast
Summit Lake, IA Weather Forecast Date: 248 PM CDT Sat Oct 17 2026
The area/counties/county of: Union, including the city of Creston.or toggle through each period.
Tonight... Clear. Lows around 40. South winds 10 to 15 mph with gusts up to 25 mph.
Sunday... Sunny. Highs in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph.
Sunday Night... Mostly clear. Lows in the lower 40s. South winds 5 to 10 mph.
Monday... Mostly sunny. Highs in the mid 60s. South winds 5 to 10 mph.
Monday Night... Mostly clear. Lows in the mid 40s. South winds 5 to 10 mph.
Tuesday... Mostly sunny. Highs in the upper 60s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
Wednesday... Sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the mid 50s.
Thursday... Sunny. Highs in the mid 70s.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.
Friday... Mostly sunny. Highs in the mid 70s.
Friday Night... Partly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
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