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Summit Lake, IA 7-Day Night Weather Forecast
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Summit Lake, IA Weather Forecast
Summit Lake, IA Weather Forecast Date: 122 PM CDT Mon Aug 17 2026
The area/counties/county of: Union, including the city of Creston.or toggle through each period.
This Afternoon... Sunny. Highs in the lower 80s. West winds around 5 mph.
Tonight... Mostly clear in the evening, then becoming mostly cloudy. Humid with lows in the mid 60s. Southwest winds 5 to 10 mph.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. A chance of thunderstorms. Showers likely, mainly in the morning. Humid with highs around 80. Southwest winds 5 to 10 mph. Chance of rain 70%.
Tuesday Night... Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 60s. Northwest winds around 5 mph, becoming northeast after midnight. Chance of rain 40%.
Wednesday... Partly sunny. Humid with highs in the upper 70s. Northeast winds around 5 mph.
Wednesday Night... Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20%.
Thursday... Mostly sunny. Highs around 80.
Thursday Night... Mostly clear with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20%.
Friday... Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 20%.
Friday Night... Partly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows in the mid 60s. Chance of rain 30%.
Saturday... Sunny. Highs around 80.
Saturday Night... Mostly clear. Lows in the lower 60s.
POP = Probability of Precipitation
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